Denise watched the movie for a few hours, not really caring too much about the plot - she had seen this movie before. She checked on the twins every half hour or so, but true to Patricia's word, they slept soundly during the whole film. Conveniently, right as the credits began to roll and Denise was trying to decide what to watch next, she heard the sound of little feet coming down the stairs.

She got up off the couch and walked to the landing at the bottom of the stairs, and saw that Katie was advancing cautiously down the steps, Lizzie right behind her. They were already back in their matching blue dresses, their pigtails mirroring each other identically with pink ribbons in Katie's hair and blue ribbon's in Lizzie's. As they saw Denise, both twins stopped. "Where's Mommy?" Katie asked innocently. "Mommy's gone for a few hours," Denise said in a friendly voice, "She'll be back late tonight, and you'll see her in the morning." Katie was silent, and Lizzie began sucking her thumb. They didn't seem to know how to respond to this turn of events. Denise kept a smile on her face, trying to keep them from feeling frightened. "She left me here to watch over you while she's gone, remember? She said we could play with any toys you girls want. We could even watch a movie!" she said excitedly. "Come on downstairs, girls! Let's find something to play with!" and she walked away from the landing into the living room. As she hoped, the girls slowly descended the stairs, curious but still nervous.

"Where's Daddy?" Lizzie asked, taking her thumb out of her mouth, and Denise told them he had taken Mommy to an appointment. "What's a pointment?" Katie asked, and Denise had to then attempt to explain what an appointment was, while keeping the details vague. She didn't want to have to reveal that Patricia was at the hospital, lest the girls get frightened about their mother's health. Eventually, they accepted that Denise was their friend, and that Mommy and Daddy would be back tomorrow. They remained a little wary, however. Denise asked the girls what they wanted to do, but had trouble getting them interested in anything, as they still didn't know what to think about her. They ended up deciding to play with dolls in the toy room, which held a barbie playhouse.

Denise was great with kids, and eventually they began to let their guards down while they played with dolls. Denise played with them, picking up dolls and being different characters with them. She stoked their imaginations, not directing the playtime, just letting them do whatever silly things they wanted with their characters, and supplementing the story with different voices as she used different dolls, which the girls found wildly funny. After a little over an hour or so of playtime, they were giggling uncontrollably as Denise moved around a stuffed pony and gave it a high-pitched whiny voice, asking the barbies the girls were holding if they knew where to find "the Horse Store". It was the kind of silly thing that only kids found funny, but Denise knew how kids thought. She was glad the girls had finally accepted her as a playmate, and weren't scared of her anymore.

As little Katie rolled around on the ground however, holding her belly in a fit of giggles, Denise realized something. Her stomach was no longer swollen from her huge meal earlier. They had drank so much milk from Patricia's breasts, that Denise couldn't believe their stomachs hadn't popped. But now it looked like they had already metabolized it. Lizzie also looked just as slender as when Denise first saw her - even if both girls were very tall for 4-year olds, they weren't at all chubby. Denise shook her head, amazed. Maybe she had been mistaken before.

The girls eventually grew bored of playing with dolls, and Denise suggested other activities, like board games, which their mother had said they enjoyed. The twins looked at each other. "Candyland!" they shouted in unison, getting up and running to the game chest. Denise got them set up on the table, and put out carrot snacks for them, which Patricia had left in prepared bags in the fridge. They played several games of Candyland, which the girls enjoyed tremendously. Based on their conversations, it sounded like Mr. Neely seldom  had time to play games with the girls, and Patricia never wanted to play Candyland, even though it was the twins' favorite game. Denise wasn't surprised. Candyland might be entertaining for little children, but it was dreadfully boring if you were an adult, especially if you had to play it over and over again.

"Denise looks like Queen Frostine," Lizzie announced as they begain yet another game. "Yeah but she has dark hair," Katie responded. "But she's pretty like Queen Frostine." Denise giggled. "Awww, you think I'm pretty? You're so sweet," she said. Katie smiled at her. "You're as pretty as Mommy!" she said excitedly. Lizzie frowned. "Mommy's the prettiest," she said stubbornly. Denise hastened to agree, assuring both girls that nobody was as pretty as Mommy. Lizzie continued to frown though, looking thoughtful. "Why are your boobies so small?" she asked Denise, looking at her chest pointedly. Denise laughed at her forwardness. Children had no idea what was appropriate etiquette sometimes. "My boobies aren't small," she said lightly. "They're actually a lot bigger than most women have." Both girls stared at her with wide eyes, not believing. "Will they ever get as big as Mommy's?" Katie asked. "No, my breasts have stopped growing, and won't ever get any bigger. Your Mommy has special breasts. They're a LOT bigger than most people's." Denise then went on to explain that women all had different breast sizes, and that many women barely had any bosom at all, and that was completely normal. They still seemed skeptical, and eyed Denise's chest as if they expected her boobs to get bigger any second now. Denise changed the subject.

They continued to play Candyland for a while longer. Midway through the next game though, Lizzie announced that she was hungry, and Katie promptly agreed with her. Denise suddenly felt an itch in her chest, and scratched at it idly as she looked at the clock on the wall. It was already 5pm. Patricia had said they typically ate around 6. "You girls are hungry already?" She asked, her voice incredulous. "You just had a huge lunch! Why don't we finish this game and play one more, then we'll get you some dinner?" Katie shook her head "No, I'm hungry NOW!" she said imperiously. "Yeah, I'm HUNGRY!" Lizzie said loudly. As both the girls stared at her, Denise could see that they weren't going to take no for an answer. She also felt the itch return, the skin of her breasts under her bra irritated for some reason. She didn't scratch them, not wanting to seem crude in front of the girls.

"All right," Denise said, standing up from the table. "Let's get you some dinner. Why don't you girls clean up Candyland while I get your milk ready?" The girls stopped their miniature staring contest with Denise, and their smiles returned as they stood up and began picking up the pieces. Denise walked into the kitchen, scratching the persistent itch that her boobs were feeling. She longed to take off her bra, for her nipples were the itchiest part, and she couldn't properly scratch around them through the bra cups. Once she got into the kitchen, she stopped her scratching and tried to ignore the itch - it would go away eventually. Denise began heating a pot of water, and placed two bottles of milk from the fridge in it to heat up, setting a timer for 5 minutes.

After getting the bottles set up, Denise looked in the fridge for her own meal, as she had suddenly realized she was hungry herself. Patricia had left her an entire casserole and said she could have as much as she wanted. Denise was feeling quite famished, so she cut a rather large slice and began heating it up in the microwave. As she waited for dinner to heat up, she began to scratch her nipples through her bra again. She realized with a start, however, that her breasts felt strange. Around the edges of her bra, flesh was puffing up over the tops of the cups. She suddenly became aware that her bra straps were digging into her skin. "What the hell..." she said, feeling her boobs through her buttoned blouse. They had become a little swollen before when she was on her period, but never this suddenly, and she had finished her cycle last week.

She was inspecting her breasts still, wondering what was going on, when the timer for the milk suddenly went off. Denise broke her attention from her boobs and shut off the stove,  donning gloves to take the bottles out of the water. Just as she finished cleaning up the pot, the microwave finished. Denise took the plate out and grabbed a fork, then gathered the milk bottles and took everything into the living room. The twins had cleaned up the board game and their toys, and were both perched on the ottoman for the loveseat that Patricia had fed them from earlier, looking at Denise expectantly. "Alright girls, dinner is served!" Denise said cheerfully, handing a warm milk bottle to each of them. They looked disappointed as they took the bottles from her. There wasn't much any of them could do about that, however. Denise grabbed the remote, plopped down on the loveseat between them, and began searching through channels for an appropriate movie for children to watch. Eventually she settled on an animated kids movie, one of those ones with the tiny adorable yellow bean people called minions. It was halfway over, but that didn't matter.

Denise got comfortable and began to eat her casserole, as the twins continued to stare at the bottles they had been given. Neither of them had taken a sip yet. "Come on girls," Denise said, patting the cushions to either side of her. "Your Mommy can feed you better tomorrow, but all we have tonight are bottles. Come sit down with me and we'll watch this movie." The twins seemed reluctant, but eventually they snuggled up to either side of her and began to drink from their bottles. They didn't guzzle the milk like they had from their mother's breasts earlier, however. Denise was a little distracted from noticing though. The casserole was delicious, and she hadn't noticed how hungry she was until just then. She scarfed it down without really thinking about it, but her stomach still felt empty as she began cleaning the plate with her fork.

The girls seemed to be engrossed in the movie, and had seemingly forgotten their reluctance to drink from the bottles as they watched the wacky antics of the animated characters. They were half finished. Denise, on the other hand, still felt ravenous. Well, it wouldn't hurt to have another slice of casserole. She got up off the loveseat, and the twins barely seemed to notice. She went to the kitchen and opened the fridge, intending to only grab a small slice of casserole, but she was so hungry that she cut off an even bigger slice than before. If she was too full she could always just throw the rest away. She put it in the microwave, and then it occurred that she was very thirsty as well. As she looked through the fridge, however, she saw that there was nothing to drink except bottles upon bottles of breast milk, and some seltzer water. Denise frowned, and closed the fridge. She grabbed a glass and poured herself some water from the fridge dispenser instead, but didn't feel satisfied as she drank it. "I could really go for some milk right now, actually." she said to herself. But it was regular milk she craved, not human breast milk. Not that she knew what that tasted like, but she'd never drink another woman's milk.

The casserole finished in the microwave and Denise eagerly retrieved it, not even waiting to get back to the living room to start digging in, instead taking a bite on her way. It was SO delicious. The twins were still avidly watching the movie, and hadn't quite finished their bottles of milk yet. Denise settled down between them, and happily watched the movie with them as she consumed her second helping of casserole. In what seemed like no time at all though, she was once again scraping the empty plate with her fork. She had wolfed down the second piece, and her eyes widened briefly, amazed at her own behavior. *I guess I was really hungry*, she thought to herself, reaching over Katie and placing the plate on a coffee table. At least she was satiated now, although she would have expected to be uncomfortably full after such a big meal.

As she settled back down into the seat, Denise heard a slurping sound to her left, indicating that Lizzie had finished her bottle. Moments later, an identical sound announced that Katie had finished hers. Both girls held their bottles out in front of them and frowned with identical expressions. "I'm still hungry," they both said at once, looking up at Denise. She laughed and stood up. "Alright girls, I'll get you some more," she said, grabbing their bottles, as well as her own plate to clean up. As she stood, Denise became aware that the itch had returned to her breasts, but she fought the urge to scratch. She went back into the kitchen and got two more bottles of milk out of the fridge, and began heating up some more water. Once the stove was going, Denise raised her hands to her boobs and began to scratch them vigorously through her blouse, looking down at them to see what their deal was.

She suddenly realized what that her breasts were definitely bigger than they had been before. She had been bulging out of her cups slightly, but now her boobs were visibly puffed up over the edges. This wasn't normal. Why hadn't she noticed this earlier? She continued to rub her boobs incredulously, feeling the way the flesh was pushing up over her bra cups, straining against the buttons of her blue blouse. The straps of her bra were very tight now. What was happening to her? "Are my boobs... growing?" she asked aloud in amazement. Even as she watched, it seemed that she could see the flesh creeping upwards farther. Ever so slowly, the fabric of her blouse seemed to move, and she began to see small gaps between her buttons. Denise could feel the bra straps getting tighter, and her boob flesh pushing more insistently against the edge of the bra between her fingers. She started feeling a rising panic. The itching in her breasts suddenly ceased, however, and the movement stopped. What had caused it? She looked at the plate that had held her casserole. Maybe eating so much had caused her boobs to swell up, or something. She felt around her waist, but no other part of her body seemed to have gained any weight.

Just then, the timer went off on the milk. Denise intended to go into the bathroom to inspect her breasts more closely, but first she wanted to make sure the twins were fed. She got the milk out of the pot with gloves, and cleaned up the pot (all the while freaking out about her boobs), and took the bottles back into the living room. The girls both looked up from the movie, and frowns appeared on their faces as they looked at the bottles that Denise held. She leaned over to hand the bottles to the girls, but neither reached to take one. "Girls?" Denise asked. "I thought you were hungry. Come on sweeties, I warmed up the bottles for you..." she said, waggling the bottles back and forth. Lizzie crossed her arms, and Katie followed a second later. "No bottle," Lizzie said petulantly. "Want boobie milk," Katie said, nodding her head up and down in a ridiculous manner.

Denise laughed, but the motion in her chest reminded her of her current predicament. Her bra straps were digging into her boobs. She hoped the girls weren't getting any bright ideas about her replacing Patricia Neely as their wetnurse. Suddenly, however, it dawned on her that her breasts had started growing only once she had started feeding the twins milk. The events seemed connected somehow. How DID Patricia get such unnaturally huge tits, anyway? Was it just something random that was particular to her? Or was it... these girls? Denise suddenly grew very still, looking at the twins in a very different light. They were both staring at Denise's chest expectantly, and their sweet little faces looked... predatory. Katie looked up into Denise's eyes. "Hungry!" she said in a demanding tone. "Milk!" Lizzie commanded, looking up at Denise with an identical expression.

Denise felt her breasts start to itch again, stronger than before.

Thinking quick, she darted forward and shoved the milk bottles into the girls' arms, firmly placing them in the crooks of their elbows. "Now now, girls," she said breathily, "Your mommy said to be on your best behavior, didn't she? I want you to be good little girls now and drink those bottles," she said, trying to keep the panic out of her voice. Her bra straps were getting tighter. Denise didn't give the girls a chance to respond, patting their heads affectionately and standing back up. "I really need to go to the bathroom now, and I don't want to hear any fuss from you, okay girls? Just drink your bottles and watch the movie." She said the last words over her shoulder as she retreated from the room, not wanting to be any closer to the girls than she had to. At her last glimpse of them before she turned the corner, Denise saw that the twins were glaring at her, but they still had the bottles cradled in their arms.

Denise walked through the kitchen and into the hallway, cradling her own boobs, which were undeniably growing, now. Her bra was emitting little ripping sounds as she hustled into the large bathroom, and the pinching from the cups was intense as she fumbled to find the light switch. After finding the switch and flipping it on, she gasped at what she saw in the mirror. Her breasts bulged out of her bra obscenely in every direction, flesh mushrooming above the cups as well as below them, and even peeking out of the sides near her armpits. The gaps between the buttons in her blouse showed creamy cleavage, which was visibly advancing upwards, gradually pushing the buttons further apart. The itching within Denise's breasts was unceasing, and she massaged her burgeoning bust through her top in an attempt to alleviate the discomfort, especially around her nipples. She needed to get her bra off before it broke - it was still emitting periodic creaking and ripping sounds at the seams. Denise looked at her reflection in the mirror. She looked preposterous, busting out of her clothes like a freaking blowup doll. But deep down, she also thought it looked... kind of sexy.

Just then, the itching within her breasts increased in intensity, and Denise experienced a feeling of something rushing into her boobs. It felt like liquid. Pressure started to build within her tits, and their rate of growth increased noticeably. "Unngghhh..." Denise moaned, as the pain of the bra straps digging into her skin increased as well. She reached up the back of her blouse, trying to undo the bra clasp. Right as she touched it, however, a mighty rip emitted from the bra as the front seam burst open, separating the cups within her blouse and freeing her boobs from their confines. They sprang outwards within her blouse, and two buttons popped off the light blue garment as it was suddenly filled to bursting with pale bosom. Denise began to remove the bra from underneath her blouse, still feeling the liquid rushing into her breasts.

After the bra was taken away, Denise could only stare as her boobs continued to grow bigger. She didn't take the blouse off, hoping that the growth would stop soon and she wouldn't have to walk through the house naked. She feared what the twins would do when they saw her next. Her boobs were as big as her head. As she watched in the mirror, they slowly grew within her blouse, the flesh relentlessly advancing outwards, the pressure gradually increasing, until they were as big as volleyballs. Another button popped off, and her cleavage puffed up out of the neckline of her top. And then suddenly, the tingling ceased, the feeling of rushing liquid slowed to a trickle, and then ended. Her breasts stopped growing, and Denise let out a shuddering breath, her boobs trembling at the motion. They were enormous, straining her blouse to its limits. The hem was pulled upwards, exposing her belly button.

Her breasts were very perky, seeming very round within her top, even without the bra. Her skin felt taught, and as Denise raised her hands to feel her boobs, she felt the pressure within them. It felt like liquid was sloshing around inside her breasts. Milk? That must be what it was. Those girls had turned her into a goddamn milk cow, just like their mother. The twins were special somehow. Every time they said they were hungry or asked for milk, Denise had felt the itch in her bosom. That must have been what was triggering the growth. Denise fought down the urge to be angry at the girls. They were just children, they didn't know any better! No wonder Patricia was having such a hard time weaning them off breastfeeding, if this was what happened when you tried to do so. Easier just to give in and let them suckle.

Wait. Had Patricia KNOWN this would happen to Denise? Remembering the $500 she had received for this job, Denise suddenly found herself furious at Patricia Neely. And Dan too! They must have known something was going on, but they didn't tell her, and now she looked like a freak! But what was she going to do now? She had signed up to watch two girls, and that was still her responsibility. She couldn't just leave them alone, what if they got into trouble? But if she got close to them they might demand her milk, especially if they saw how big her boobs were now. Denise was starting to look awfully similar to "Mommy", and the twins clearly felt they were entitled to "boobie milk", as they had put it. She was taking too long in here, and needed to go check on them.

What to do? She needed to contact the Neelys and get them to come home ASAP, that was all there was to it. She hadn't signed up to become some sort of huge-titted wetnurse for these girls. Her phone was in the kitchen.

Denise crept out into the hallway, feeling the weight of her breasts bounce, and stealthily made her way to the kitchen, peeking around the corner into the living room. The girls were watching the movie, and the bottles were in their mouths. Denise suppressed a sigh of relief as she ducked back around the corner and grabbed her phone. Now to contact the Neelys, and figure out how to survive the next few hours without freaking out the girls or letting them catch on to how they were affecting her. She didn't know what 4-year olds would do with that kind of power over their babysitter, and she didn't want to find out.

Patricia was in surgery though, and had only left her cell phone number, not Dan's. Denise looked at the clock. Almost 6:00 pm. She didn't want to call the woman in the middle of surgery, no matter how angry she was at her. Instead she texted her: "We need to speak, immediately. The twins are fine but I am having an issue, and you need to come home ASAP. Denise". Putting the phone away, she peeked in on the twins again and saw they were still drinking the milk and watching the movie. Denise thought for a moment, then began climbing the stairs, her breasts bouncing with each step, the milk sloshing within them. They still felt so full. Was there any way to empty them?

At the top of the stairs, Denise quickly made her way to the Neely's master bedroom. She didn't want to leave the girls alone for any longer if she could help it, but it was important that she not appear in front of them bursting out of her top. Denise entered the walk-in closet. Patricia would have something that fit her, for sure. And Denise didn't care about using the woman's clothes. If she was going to put her in this mess, she could deal with someone borrowing her laundry to cover herself. Denise eventually found a knit sweater that was made of soft fabric, and fairly thick, which seemed like it would hide her figure somewhat. At least, her breasts wouldn't be so obvious as in her blouse. She peeled the garment off, struggling to get it over her head. When she stood in front of the mirror, she grimaced as she saw how her boobs stuck out from her chest. They jutted outwards like torpedoes. They were so tight, and the pressure hadn't gone away! She lifted her hands up to her nipples. And moved her mammaries up and down, feeling them slosh with liquid. Could she get the milk out?

Still topless, Denise took another detour, this time into the bathroom. Once there, she leaned over the sink and began pinching her nipples, pulling on them and kneading them between her fingers. She was rewarded almost immediately, as drops of white liquid beaded on the ends of both nipples. She continued working them, and trickles of milk began to leak out of her breasts. She did this for a little over a minute before getting frustrated. This was taking too long, and the girls must be wondering where she was. Patricia must have a breast pump somewhere, she thought, and began digging through the drawers under the bathroom sink. In the bottom drawer, she found what she was looking for. It was battery powered, and simple to operate, with a reservoir for each nipple and a hose that combined both streams for easily filling milk bottles. The hose wasn't attached to any bottles though, which suited Denise just fine. She intended to empty this milk into the sink anyway. Feeling the clock ticking in her head, Denise impatiently set up the device on her nipples and turned it on.

The suction went for a few seconds, getting only dribbles of milk from each breast, until the floodgates opened, and her boobs began to empty themselves. Denise sighed in relief as the pressure within them slowly abated. She stood over the sink for several minutes, and the pump did its work efficiently, sucking up all the milk from her mammaries and depositing it in the sink. She watched it swirl down the drain, wondering how her body had made so much, so fast.

Something was very strange about those girls downstairs. She just had to make it the rest of the night without them getting hungry though, and then she could demand answers from the Neelys when they returned.