Megan waited patiently for her friend to arrive. It had been nearly a week since she had seen Erica, enough time for her to decide how she wanted to handle this- and enough time to get clothes to fit her newly-grown behemoths. Erica had given her a DD cup bra—a joke for the girl with A cups—except the bra was magic. Megan now sported huge, milk-filled breasts. Unsupported, her titanic tits hung down to her hips, her plump nipples thrusting out a foot beyond her chest. In her custom-made bras, Megan’s boobs only reached a little past her navel, but stuck out more than a foot.

She had decided to forgive Erica. Maybe she had been kind of a jerk, giving flat-chested insecure Megan a bra that was too large, but that same bra had made her grow huge boobs, so in her opinion, Megan had come out on top. She even enjoyed the whole lactation aspect. When Megan heard a knock on the door, she went to open it. As she opened the door, Erica’s jaw dropped.

“Holy shit, Megan, what happened to you? Your boobs are enormous!” Erica looked down at her own cleavage, her E cups feeling small for the first time in her life.

“Come inside and I’ll explain. It’s all your fault, though, really.” Erica and Megan walked up to Megan’s bedroom, their usual hang out spot. Megan closed the door behind them.

“So how is… this…” Erica gestured awkwardly to Megan’s prodigious frontage, “my fault?”

“I put that bra on—the one you gave—just for the laughs, you know, and all of a sudden my boobs started growing. Pretty soon they were overflowing the bra, then they kept going, even after I took the bra off. It made me start lactating, too. My boobs make milk now like you wouldn’t believe. I’ll probably have to empty them soon.”

Huge and lactating? Erica thought. If only I had put the bra on before I gave it to her.

“Come to think of it,” Megan said, “I’m gonna go do that now. Make yourself at home while I’m gone, okay?”

“Will do, Meg,” Erica replied. Maybe I could find that bra…

One Megan left, Erica began to look for the bra she had given Megan. To her dismay, it didn’t seem to be anywhere in her room. She kept looking for what felt like forever. Unfortunately for her, Megan came back before she could find it or hide the fact that she was rifling through Megan’s possessions.

“Erica? What are you doing?” Megan asked, somewhat alarmed.

Erica jumped slightly from being surprised by Megan’s voice. “I, uh, nothing. Just hanging out.” She lied. She noticed Megan came back holding a box.

Megan’s eyes narrowed. “You were looking for my bra, weren’t you?”

“I… yeah. I was. I’m sorry, Meg, I’m just really jealous of you now. Your boobs are so huge compared to mine!”

The expression on Megan’s face lightened. She completely understood boob envy, since she was flat chested a week ago. “Well I’ve got something that you’ll love,” Megan said, holding out the box for Erica to take. “It’s the magic bra.”

Erica eagerly took the box. “Really?” she asked, surprised. She opened the box and found the bra. It was a little stretched from Megan’s growth, but that would help her fit the DD cup bra on her E cup boobs.

“Do you want me to- right now?” Erica delivered her question somewhat awkwardly.

Megan shrugged, her massive breasts wobbling slightly. “If you want to.” She laughed. “Just go in the bathroom first. Your tits’ll start leaking while they’re growing. Let me know if you need any help.”

Erica nearly crushed her friend in a tight hug. It was hard to wrap her arms all the way around Megan with Megan’s boobs between them. “Thank you, Megan, you’re the best.” Erica sauntered off to the bathroom. Good thing I milked myself a few minutes ago, otherwise Erica and I would both be covered in it.

Erica didn’t bother closing the bathroom door before stripping down. Megan’s mom wouldn’t be home for hours at least, so there was no danger of anyone seeing her topless that hasn’t already. Megan got an eyeful of these boobs that time that huge wave pulled my bikini top right off of me last summer. At least the beach was empty that day.

Naked form the waist up, Erica pulled the bra straps over her arms to her shoulders. Her boobs bulged over the cups as Erica hooked the back of the bra. Erica gazed down at her breasts. “How quickly does it”- she was cut off by the feeling of the bra getting tighter. “Damn, that was fast.” Erica grit her teeth as the bra became increasingly uncomfortable. She pulled the straps off her shoulders and pushed her thumbs into the band and tried shoving the bra down off her burgeoning breasts. With some effort, the bra popped off, revealing that her E cups had grown into G’s already. As promised, Erica’s tits kept swelling. Drops of milk leaked from her plumping nipples and she couldn’t help but notice how full they felt. My boobs are full of milk already? This bra doesn’t mess around, huh?

Erica kneeled over the tub as her growing breasts continued to fill with milk, the pressure steadily increasing. With her boobs hanging over the edge, Erica brought her hands to her nipples as they grew further and further away from her chest. The motion to milk herself was a little awkward at first, she thought, but the pleasurable sensations as the flow of milk out of her fattening nipples increased encouraged her to keep going. Her breasts continued to grow in her hands. By now, they were about the size of her head and showed no signs of stopping yet.

She milked herself into a daze, losing track of just how big her tits were growing as the feeling of her milk flowing overpowered her senses. For the moment, all Erica could focus on was her nipples and the huge quantity of milk behind them. She could only marginally tell that her boobs were still growing from them pushing more and more into her hands. The pleasure mounted as her breasts grew and filled with more milk, and she milked herself continuously. Suddenly, she climaxed, almost violently. Erica’s entire body shuddered and she blacked out from the intensity of it all.

When she came to, Erica’s top half was slumped over the tub; her boobs reaching the floor and slightly supporting her torso. She discovered that her hands were still tugging on her nipples even though her breasts had run dry at some point during her orgasm. She put her hands on the wall of the tub and pushed herself up, the magic bra still hooked around her waist. Looking the mirror, her first thought was Not as big as Megan. Her breasts were still mightily impressive, reaching down to her belly button, eight or nine inches across. What really surprised her were her nipples. They were disproportionately large, looking like inch-thick quarters. The fat nubs were a bit more than half a foot out from her chest. Erica turned towards the doorway as she heard Megan coming down the hallway.

Megan had been talking as she approached the bathroom. “Erica, I grabbed you a shirt because I doubted the one you wore here would fit after your growth and”- she saw Erica in the bathroom. “Holy- wow! Geez, I guess you’ll need another pair of shorts, too.”

Erica followed Megan’s gaze to see that she had soaked into her shorts during her growth. She turned, embarrassed, trying to hide it. “I- uh- yeah, that would be cool. It just… it just felt so good. Like mind numbingly good.”

“Trust me, I know, Erica. It isn’t as intense without the growth, luckily. Otherwise I’d never get anything done,” she said. “I’ll get you those shorts.”