Portia knocked on Maddie’s bedroom door… there was no response. She  knocked a little harder. A faint “Huh?” sounded from inside the room.  “Yeah?”

“It’s me, Portia,” the alchemist said. “Can I come in?”

Madeline sat up in bed, hair disheveled. “Uhhhh… hold on. You’d probably prefer me with a shirt on, yeah?”

“Are you… just getting up?” Portia asked. “It’s nearly noon.”

The brown-haired girl quickly pulled a loose sweater on. “No! I’ve just been… uh… napping. I got up real  early. Yup!” She rose out of bed, shuffled over to her door and pulled  it open. “Good morning. I’ve definitely been up for a while now. Mhm.”

Portia observed the unkempt mess that was Maddie’s outward appearance. “Uh huh.”

“Shhhhh,” Maddie said. “I would… never sleep this late.” Standing in  the doorway in front of Portia, Maddie had to admit this was the closest  she’d ever seen her new housemate. Long dark hair framed a strong  jawline and thick eyebrows. The young woman’s green eyes seemed to  pierce right through Madeline’s being. “Anyway, what’s up?”

“I was, uh, wondering if you’d…” Portia hadn’t made eye contact with  Maddie this entire sentence, and she rubbed one elbow awkwardly. “If  you’d wanna come with me while I get my name changed.”

Confusion flitted over Maddie’s face. “Huh? You don’t like Portia?”

The alchemist blushed. “No, I do, but you see, uh… well, I picked that. I wasn’t… always Portia.”

The synapses finally started firing full-force for Maddie. “Oh!  You’re- I get it. Of course I’ll come with you! I’ll throw some shoes on  and we can get a move on.” She smiled at her housemate, hoping she was  reacting well.

——————————————-

“I’m glad you’re coming with me, Maddie,” Portia informed her as she  drove. “I didn’t want to go alone, but I wasn’t sure how coming out to  you would go, but you’re a good egg from what I’ve seen.”

Maddie laughed at her use of the phrase ‘good egg.’ “I mean, it’s  what’s on the inside that counts, right? If you say you’re a woman then I  believe you. It doesn’t matter what else you’ve got going on.”

Portia smiled with that weight lifted from her shoulders. She  laughed. “I kinda feel like I cheated, you know? Because living with all  the girls in the house… they helped me transition with magic. Sometimes  I feel like I took the easy way out, because how many other people have  a house full of witches to transform them?”

“That’s understandable, I guess,” Maddie agreed.

“That’s why I spend so much time with my potions. I’m trying to  perfect the ones that will help kids like me get something they need…  lickity-split.”

Maddie kept smiling. “I hate to interrupt this heart to heart we’re having right now, Portia, but where on earth did you pick up all these old timey phrases? First you call me a good egg and now lickity split?”

Portia shrugged. “I don’t know… parents, I guess. Or maybe I’m just a  big dork.” She pulled the car into the City Hall parking lot. “Here we  are!”

——————————————-

Portia pushed the front door to the coven house open to find the  entryway empty. “Huh,” she said. “I would’ve expected people to be back  by now.” Suddenly, from the corners of her vision, came bright party  streamers. Rose, Heidi and Alexia popped up from behind some furniture  with party blowouts as Portia processed what was happening. From the  stairway railing hung a banner that said “It’s a girl!” with Portia’s  face on either side.

“Surprise!” rang out from all around the newly-entered pair of witches.

“Oh my goodness,” the alchemist muttered, smiling. “You’re all ridiculous.”

Jenny walked out from the kitchen, supporting a cake in her arms. Portia turned to Maddie. “Did you know about this?”

“I’m just as surprised as you!”

“We all pretended to be busy this morning so we could surprise you,” Darcy explained. “Well, Jennifer actually was busy, but she wanted to help celebrate too.”

“Might as well take advantage of the new baking-witch, right? Now, come on in to the kitchen, this cake is heavy.”

The witches gathered in the kitchen around the lit cake. “Make a wish, hun,” Rose chimed.

Portia blew out the circle of candles in one go. “Thanks, girls,” she  said, sniffling back tears. “I know you’ve always supported me, but…  just… thanks. So much.” The coven gathered and wrapped the alchemist up  in one huge hug, squishing her a little too much.

The group split and began dividing up the cake. “Crazy how I made this after coming home from the gym, huh?”

“Whereas your sister was in bed until noon,” Portia teased.

“I need my beauty sleep,” Maddie responded, sticking her tongue out  at the alchemist. Her sister sat down next to her. “So, how was the gym,  Jen?”

“The one here is fine, just like the one back where we lived. Lifting would be easier without boobs, though.”

Maddie eyed her sister’s chest and hmmmed. Her birthday is coming up soon…

——————————————-

“Enchanting things is a pretty advanced skill, Madeline. Are you sure you’re ready for it?” Darcy stared up at her.

“Yeah! I wanna do something for Jenny’s birthday. She’s been  complaining forever that her boobs are too big for working out and,  well… I wouldn’t mind the extra size.”

Darcy hmmmmed. “How much time do we have?”

“Her birthday’s in two weeks.”

“Well, it will not be easy teaching you that quickly, but I will do  my best. We can get started after dinner. Portia was looking for you, by  the way.”

Maddie strode out of Darcy’s room and down the hall to Portia’s. She knocked. A muffled “Huh?” came through the door.

“It’s Maddie. Darce said you were looking for me?” The door swung  open. Portia’s hair was pulled up into a loose ponytail; she was wearing  her smock.

“Come in, come in,” Portia mumbled, gesturing for Madeline to hurry.  The alchemist shut the door behind her. “I have something I wanted to  give you, Mad.” The taller girl rifled through her shelves and stocks of  potions. “Where is it, where is it?” she muttered. Digging deeper into  her stores, Portia withdrew a single vial, the size of her fist, filled  with dark green, bubbling liquid. She held it out towards Maddie.  “Here!”

Maddie was a little revulsed at the appearance of it. “You trying to kill me, Portia?”

“No, its- we call it the ‘Thot Potion.’ I originally made it for  Rose. It, eh, makes you infertile and prevents any STIs. The infertility  part is reversible, if that’s something you want to do at some point.”

The boob-witch giggled. “So, let me get this straight, you made a  potion for Rose so she could be a ho without repercussions? That’s amazing.”  Maddie grabbed the vial out of Portia’s hand. “I’m definitely about  it.” She popped the cork off and took a few healthy swigs to finish it  off. “So that’s all there is to it? I can go get nutted in with no  consequences?” The two women laughed at Maddie’s terminology.

“Yeah, yeah,” Portia stuttered out through deep breaths and laughs. “Can I ask you another favor, Maddie?”

Madeline smiled. “Of course, bud.”

“Well… being trans, I always… I- I want big fuckin’ titties.”

“I can do that,” Maddie replied, laughing. “Just tell me when.” She  snapped her fingers. “Oh, and-” She snapped her fingers again, this time  making Portia’s clothes adjust to her swelling boobs. Portia’s henley  and bra stretched around her plumping chest, and she ran her hands  around her breasts, thrilled as they overwhelmed her grasp. The  alchemist squished her hands into them, and she smiled as she noticed  she couldn’t get all the way to her rib cage.

Portia’s boobs were approaching her belly button when she finally  called for Maddie to stop. She turned to face the mirror she had in her  lab and admired the new figure she sported. “Thanks, Madeline,” she  murmured.

“You’re welcome. You’re almost as big as me now, Porsh.”

——————————————-

“Alright, Madeline, we will start with the simplest enchantment-  making clothes fit. Should be useful with your abilities. Will also help  with making Jennifer’s ring fit.”

“Okay, and this is it in your spellbook?” Maddie sat at a table in Darcy’s room, with the shorter witch standing behind her.

“Yes. Read over that, and we will try to make this shirt”–Darcy held up one of her own–“Fit you.”

“Okaaaay…”

——————————————-

The day of her sister’s birthday, Madeline dressed herself loosely as  best she could, trying to accommodate her future growth. Getting back  to her room from the shower, Madeline pulled one of her older pairs of  underwear up her legs, her plump boobs jiggling as she shimmied.  Madeline then settled her heavy J cups into a dull looking bra she’d had  for years and zapped to fit after her lessons with Darcy. “I might  break through my these during my growth today, so I’d rather use old  ones- the newer, prettier ones I can change to fit me later,” she  whispered, smirking, imagining what she was going to look like at the  end of the day.

Next, she donned her ex Brandon’s shirt and a pair of stretchy black  leggings. “Plenty of room for the girls to grow now.” Madeline couldn’t  help but smile as she looked at herself in a mirror, giving herself an  even curvier figure in her mind’s eye. She quickly threw on a pair of  shoes, picked up the box that had Jenny’s ring in it and slipped on her  own, and waltzed down the hall to find her sister in her bedroom.

“Jenny! Happy birthday!” Madeline said, warmly, with no indication  she was up to something. She held out the box with Jenny’s ring. “I got  you something.”

Looking at the pair of them, there was no doubt the two women were  related. Just seeing their faces, people assumed they were twins. They  had the same bright eyes, cute button noses, high cheekbones and full  lips. Their hair was originally the same color, a coppery brown,  although Maddie had finally dyed hers silver, and they wore their hair  in different styles: Madeline’s was long and always kept in a messy bun,  whereas Jenny’s was a pixie cut. Past the faces though, it was evident  they weren’t actually twins, at least not identical. Madeline was more  topheavy than her sister, now exaggerated with Maddie’s first experience  with her breast-growing magic. Jenny turned out to be more pear-shaped  than her sister, albeit taller, and her DDs were nothing to scoff at.

“Oh, Maddie, you shouldn’t have,” Jenny cooed when she unwrapped the  box and opened it. “It’s beautiful, sis, let me try it on.” She slipped  the ring on and both girls immediately felt a wave of heat shroud their  bodies. Madeline smirked as she anticipated the magic to start.

It started off slowly. Madeline felt it begin as a slight tightness  of her bra band, the cups starting to feel ever so slightly too small.  The transformation quickened with time, and Jenny noticed her endowments  shrinking. “Maddie… what’s going on?” she asked, feeling a little woozy  as the magic worked. Maddie’s breasts were swelling over the cups of  her bra as Jenny’s pair became smaller and smaller.

Jenny could see Madeline’s boobs growing too big for her bra. “Are  you… taking my boobs?” She asked, entirely curious. Her sister paid no  attention to her. Her focus was completely absorbed by her growth. As  her already huge breasts kept growing, Madeline was overtaken by the  sensation of it. She bit her lip as she felt her plumping nipples rub  against her increasingly tight bra; her volleyballs were looking more  like basketballs, squished inside her bra. The burgeoning flesh flowed  around the edges of her bra in all directions, putting a large amount of  strain on the clasp in the back.

A loud snap brought Madeline’s attention back to her chest as her  growing boobs finally broke the clasp of her bra. With their new  freedom, her breasts assumed a more natural shape, pushing out on her  shirt, the outline of her growing nipples becoming apparent through the  fabric. Madeline pulled her arms out of her bra straps and pulled the  useless garment out of her shirt.

After a few more moments of growth, Madeline’s titanic tits finally  wobbled to a stop. She brought her hands up to her boobs and sunk her  fingers into her pliant flesh before her sister got her attention.

“Hey, Maddie? You still in there?”

“Huh? Oh, yeah! I hope you like the gift!”

“It’s wonderful, Mads. Looks like you need a new bra though, huh?”

Maddie pulled the destroyed garment out from under her shirt. “I  guess this one’s a goner, but Darcy taught me how to adjust clothing  sizes… which is why that ring fits you.”

“Thanks again, sis,” Jenny said, pulling Madeline into a hug. “So what am I down to now?”

“My intent was around a B cup. I can work on your bras too, if you want.”

“That would be fantastic,” Jenny said, holding onto Maddie’s shoulders. “You need to re-do your roots, bud.”

“Ugh, already? I have some dye still, I think…”

——————————————-

“Watcha doin’, hot stuff?” Rose asked, eyeing up Maddie’s figure.

The boob-witch sighed. “Redoing my roots.”

“Put down the dye, I got this.” Rose stepped behind her  barely-shorter companion and ruffled her fingers through the two-tone  mane Maddie was currently sporting. “I can make it grow in silver,  Maddie, is that what you want?”

“I’d love you if you did.”

Rose smiled at that. “Sure thing, gorgeous.” The face-witch massaged  Maddie’s scalp for a few minutes. “This takes a little while, babe, bear  with me.” Rose gently slid closer and closer to Maddie, pressing her  hips to the booty in front of her. “There,” she whispered into Maddie’s  ear when she finished. “Anything else?”

Looking in the mirror, it was impossible for Maddie to deny Rose’s  beauty. The girl sure was coming on strong… Maddie leaned back a little  and turned her head to the side, kissing Rose on her plump lips. The  seductress smiled, sneaking her hands up Maddie’s shirt, caressing the  cups of Maddie’s bra. Rose grabbed Madeline’s hips and pulled her out of  the bathroom, down the hallway to her bedroom.

Rose closed and locked the door behind them, tossing Maddie onto the  bed. Straddling her, Rose once again worked her hands under Maddie’s  shirt, pushing the hem over her titanic bra. “Jesus,” the blonde girl  whispered. “Look at those things…” Rose pressed her hands into  Madeline’s tits, eliciting a small moan from the young woman beneath  her. The domme bent down and pressed her lips to Maddie’s again,  sticking her tongue in her mouth as well. Rose reached around and  unhooked the bra clasp, eager to get to the boobs within.

Sensing this, Maddie grabbed her shirt and bra and tossed them away,  then hefted her boobs in her arms, squeezing them together. “Like what  you see?” she purred.

“Beautiful,” Rose commented. “And huge.” She thumbed Maddie’s nipples, bringing them to stiffness in the cool night air.

“Hmmmngggg…” Maddie moaned from Rose’s titplay right before Rose bent  over again and sucked one of the hard nubs into her mouth. “Ohhhh, oh  fuck, Rose, you’re great…”

“Mhmmmm,” Rose cooed, slipping Maddie’s leggings and thong off, still  attached to a nipple. She bit down gently, nibbling on her sub’s teat.  Maddie’s hips bucked and her thighs clenched together, but Rose released  her and firmly pushed her legs back open. “Uh uh,” she said. “Be a good  girl.”

“Mm… mhm,” Maddie mumbled, wrapping her legs around the outside of Rose’s.

“There you go,” she said, trailing down from a nipple, down Maddie’s  torso, planting soft kisses as she went. “Silver down here too, huh? I’m  better than I thought.”

Maddie blushed in the dark. “You… shush. It’s been a couple days since I shaved…”

Rose smirked and pushed a thumb into Maddie’s folds, teasing her clit  before pressing forward, placing her lips on the woman’s quivering  pussy. Maddie, for her part, could only gasp and run her fingers through  Rose’s hair as the other witch went to town on her. “Oh fuck, oh fuck,  fuckfuckfuuuuuuck! Rose, I’m- ooohhhh, I’m gonna… ahhhH!” Maddie’s legs  tensed around Rose’s face as she bucked, on one hand unable to handle,  but on the other, wanting nothing else but for Rose to stay down there  all night.

The face witch pulled away from the panting woman on her bed, who  slumped into the mattress. “Alright, Madeline,” she purred. “Since I’ve  been so generous to you, I need you to show me you’re still a good,  obedient girl.”

Maddie nodded eagerly. “Uh huh! I’m a good girl, I promise!”

“Excellent.” Rose smiled. She pulled Madeline to her feet and walked  her to the windows of her bedroom. “Show the world your titties,  Madeline. Such beautiful examples… shouldn’t be hidden.” Rose gently  pressed on the small of Maddie’s back, pushing her towards the window.  Madeline placed her hands on the panes and slowly eased herself into the  cold glass, her nipples stiffening further.

“Like this, mistress?”

“More,” she cooed. “I want those panes full of tit.”

Madeline pressed as far as she could, pushing her face into the glass as well.

“That’s good, pet, I’m sure the world loves your boobies. Let me give  you a hand.” Rose stood behind Maddie and pushed hips into hips, until  Maddie blocked nearly the entire window.

“Say thank you, Madeline.”

“Thank you!”

“What are you thanking me for, pet?”

“Thank you, mistress, for teaching me that my boobies should be shared with the world!”

“That’s a good girl,” Rose complimented as she pulled Maddie back  onto the bed, straddling her again. “Now… show me how thankful you are.  Undress me.” Maddie gleefully started pulling at Rose’s clothes, tossing  them all over the room. Naked, Rose climbed over the mountains of tit  and clambered to Maddie’s face. Her sub obediently grabbed onto her hips  and pulled her down, feverishly eating Rose out.

“Oh, that’s… ooohhh… that’s good, Madeline,” Rose mumbled, trying to  stay in character. She leaned over, snaking her fingers into Maddie’s  hair. “Don’t… stop… until I… say… so…” Maddie reached up and fondled one  of Rose’s tits- nowhere near as big as hers, but still more than a  handful. “Oh, shit, Maddie, I’m gonna… fuck… I’m gonna…”

Rose’s thighs went limp for a second as she came, smothering Maddie with her pussy. “Oh, god, you can… holy fuck shit,” she streamed profanities as she tumbled to the side.

Laying there for a few moments–or maybe a few minutes–Maddie finally  got the energy to speak. “Rose?” She propped up on her elbows. The  blonde woman was already out cold. “Alright, well,” Maddie yawned.  “Don’t mind if I join you…” She pulled both of them under the bed  sheets, and Rose somehow instinctively spooned Maddie, each hand on a  huge breast.

——————————————-

Sunlight streamed in through the windows, waking Maddie up earlier  than she usually would be. She stretched out, then suddenly remembered  where she was. “Rose?” She gently tried to wake her companion.

The blonde slowly opened her eyes. “Oh, hey, Maddie. Good morning.”

Madeline sat up. “So, uh-”

“I already know what you’re gonna ask, and the answer is: I’m  aromantic. I have no doubt you’d make a wonderful girlfriend, Maddie,  but that’s not my thing. I really just wanted to know what those tits  were like.”

“Well, hopefully your decision is ‘wonderful,’ otherwise, you won’t  be seeing them again for a while.” Maddie rose out of bed and started  pulling her clothes on. “I’m assuming there’s no point trying to sneak  out of here, huh?

“Oh, the rest of the coven definitely knows. Neither of us were quiet.”

“Alright, well… you’re good at what you do, Rose.”

Rose gave her a mock salute. “Right back atchya, Madeline.”

Maddie left Rose in bed, grabbed a towel from her room and walked to  the bathroom, starting up the shower and hopping in a little bit before  it was hot enough. She let the water stream over her, running her hands  down her curves.

What if they were bigger? She wondered. They’re only like, what, basketballs? I could make them bigger…

Quickly making up her mind, Maddie snapped her fingers and smiled as  she welcomed more growth. From around her belly button, her tits began  creeping down, obscuring more of her torso. She grabbed her soap and  began lathering up her boobs, internally giggling at how much like  softcore porn this was. Her hands sank into the pliant and growing  flesh, and she squeezed them in her hands, smiling.

Maddie let the stream of water wash the soap off her, then lifted one titanic tit to her lips. It’s so easy to reach them now,  she thought, slipping a full nipple into her mouth. She sucked a  little, enjoying the sensation of the nub stiffening, then gently  dropped her breast and grabbed the other one, doing the same with this  one. With both nipples hard, she couldn’t help but play with them,  flitting her thumbs over the nubs, pinching, pulling lightly.

As the growth ebbed away, she had another thought.

I should figure out how to make these like… auto-orgasm buttons… well, maybe not that extreme.