Use it when your boyfriend comes over,” her Nonna had said, winking. Julie didn’t question it; she’d suspected her grandmother had some kind of… powers for a while now. As he stepped through the door, she pulled him eagerly into her bedroom. Julie closed the door behind them, smiling. She uncorked the vial of potion and gladly drank all of it, still not entirely sure what it was going to do. Julie was clued into something happening to her when her boyfriend’s eyes widened looking at her. She quickly lowered her gaze to herself and saw her decent but average curves intensifying.
Julie’s sensible outfit–a t shirt and shorts in August–were quickly becoming outmatched as she grew. “Help me out of these clothes,” she half asked, half commanded her boyfriend. He didn’t need to be told twice, and began pulling any and all garments off her. Fully naked, they both just stood and watched her grow for a while, Julie’s tits swelling past handfuls. An enjoyable sensation began to accompany the growth, and Julie started to feel herself up as her boobs and butt grew even more exaggerated.
She let out a quiet moan. “I can… feel my skin stretching, hun, stretching over all this flesh…” Overcome with sensation, Julie pushed her man backwards towards her bed, and started tearing his clothes off in turn. He eagerly assisted her, and grabbed one of the condoms from her drawer. Pulling it over his stiff erection, Julie was already on top of him and working herself over it, still growing. By now, her melon-sized tits were making a push to rival her head, and her butt was like nothing either of them had ever seen before. As she plunged down on his shaft, it seemed like her growth was speeding up.
Francis, to his personal disappointment, was not going to last long in these conditions. Julie was a dream come true right now- for both of them. As she continued her up and down motions on him, still growing, he was barely holding himself in. A hand sunk into the pliant flesh of his girlfriend’s butt, the other gently caressing a growing tit. He squeezed, and for a second Julie lost focus on what she was doing, and slid down on him, farther than she usually would have. The couple gasped in unison, and Francis bit his lip to keep himself contained.
Julie pulled herself back up and slowed her movements a little, the pair smiling at each other. She leaned down to kiss her man, her boobs pushing into him slightly. She took his lowered guard as the perfect opportunity to start again, and Julie was quickly back working him into a heavy-breathing mess, even as she became the same. Her swelling boobs bounced with her, slightly out of sync. They had eclipsed her ribs now, creeping towards her navel. Francis’ hands were back to his favorite parts of her, and one final squeeze was enough to finish both of them. Julie shuddered and curled her toes as she climaxed, her hips lowering one final time on her boyfriend, who finally released.
She collapsed on top of him, then finally rolled off to one side, exhausted. The two lovers lay beside each other for a little while, neither having the energy to speak. Francis was beginning to feel the hands of sleep pulling at him until Julie said something he’d never be able to sleep through.
“Oh, god, Francis, I think it’s starting again.”
He rolled over to face his recently-expanded girlfriend; they’d just had the most amazing sex of their life as Julie grew. Now, she took up most of the bed—not that he minded—and she said she was growing again? She pushed him back over and straddled him, her wide hips stretching out much farther than his. Francis stared up at a pair of tits like volleyballs- and felt the ass that matched it on his thighs. Amazingly, Julie’s waist had remained the same, not budging so much as an inch throughout her growth.
“I hope you’re ready to go again, mister,” she spoke through her gentle yet building moans. It was almost imperceptible at first, but as the two focused on her body, the slowly mounting growth was apparent. As they watched, it sped up, and Julie’s tits were quickly but steadily approaching her hips. She grabbed another condom from the drawer—trying to not let the increasing weight on her chest pull her off the bed—and eagerly pulled it over Francis’ cock. Not wasting any time, Julie plunged right down on top of him, a deep moan escaping her as she grew ever larger.
One of Francis’ hands grabbed onto a swelling boob, the other reaching over Julie’s wide hips to her plump bum. She gleefully rode him, her tits bouncing slightly behind her timing. Francis, for his part, still couldn’t wrap his head around how big Julie was getting, it was crazy to him- all from that little potion she drank before. It was all he could do to hold himself at bay- he didn’t want this to end, ever, and it seemed like Julie felt the same way. Her body became more sensitive as it swelled larger and larger, and her thick thighs powered her continuous up and down motion. They were keeping proportional to her butt and hips, which were nearly two feet wide by now, almost matching the width of her bedroom door. He couldn’t really see her butt, but it had to be massive to match these hips; his hand felt dwarfed by her growing cheeks. Francis’ other hand felt even more dwarfed, since he could see just how busty she was getting. If she kept growing at this pace, it wouldn’t be long before her tits didn’t lift off of him as she bounced on him.
Julie didn’t continue that pace- she grew faster. It was constantly accelerating, bit by bit, obscuring the rest of her body behind mounting flesh. Julie’s tits left basketball sized behind, quickly approaching beach balls, and her butt was nearly the same. Francis slapped her growing butt and saw the motion continue through her body. The huge mass that was her behind swayed from side to side, and the vibrations ran up into her tits, sending them into mesmerizing jiggles as well. Julie’s waist was lost behind her mass of breast, the yoga balls now hiding most of her upper body. He could tell she was enjoying this just as much as he was, and with a small grunt she lost her up and down momentum as the most intense orgasm of her life shook through her, sending her expanding body into fits of motion.
She tightened on Francis as she made her last plunge down on his erection, and it was too much for him, and he followed the precedent of the curvy goddess riding him. Exhausted, Julie collapsed on him- as best she could, since her enormous breasts supported her torso. They lay together like that, neither stirring as Julie’s body put on the last touches of growth, finally stopping.
“Julie,” her boyfriend wheezed from below her. “Would you mind… getting off of me?” She looked indignant for a second. “Your boobs—while I love them very much—are also very heavy.” Julie stretched down as far as she could to kiss him, her boobs squishing out between the two. She gradually rose from the bed, adjusting to the amount of weight that her curves added to her frame. Francis inhaled as she got up and rolled over to face her, desiring only to see her new curves. Julie spun around, trying her best to see all of herself. While it was hard for her, it did put on a good show for her boyfriend.
“Damn,” he whispered.
Julie turned and smiled. “You like what you see, huh?”
“You’re… a goddess. I don’t know how else to describe you.” Julie’s tits were down to her thighs, almost halfway to her knees, her huge but proportional nipples nearly two feet out from her torso. Her bottom half was similarly sized, her butt matching her boobs for size, and her hips and thighs having grown to accommodate it. She was a sight to see, but her thoughts turned to how she was going to go about daily life now…
-
“Francis?” she called out. Julie was still in her bedroom, Francis had gone to grab something to drink. “Francis?” she called again. She heard his footsteps—more rapid than usual—approach her door. He walked through the doorway and his jaw immediately dropped.
“I think it’s happening… Again. I hope you don’t mind me immobile…” Francis moved to get another condom from her drawer—he was sure she was feeling the same way he did—but she stopped him. “I think… every time we’re together, it’s making me grow again. I’m already big enough… and getting bigger. Just… watch this time?”
Fighting against the unbelievably stiff erection in his boxers, Francis reluctantly acquiesced. He sat back on her bed as she stood in front of it, her burgeoning boobs coming closer and closer to the floor. After only a few minutes of growth, Julie’s tits were already passing her knees, her plumping nipples nearly three feet in front of her. The weight pulled her down, and she collapsed on top of her gigantic breasts. Nearly forgotten, her butt was plumping up further too, keeping pace with their top half cousins. The rest of her was almost lost between the huge mass of butt and boobs she was between, and her hips and thighs were matching her bum.
“It feels so good, Francis,” she teased from her trapped position. “My skin is stretching so much, there’s so much of me now.” Francis mentally noted to get her back for this somehow. Julie was exploring her plumping body, playing with what she could, mostly just pressing her hands into her expanses of flesh. Her eyes rolled back in her head and she let out a deep moan, and Francis knew she wasn’t entirely just teasing him. Her boobs were pushing her away from the floor now, raising her higher up in the air.
Julie’s inability to reach her nipples gave him an idea. He rose from the bed and knelt in front of her, out of arm’s reach. His hands approached the thickening nubs.
“Francis.” He gently held one in each hand. “Fraaaaaaanciiiis,” she moaned. He squeezed them a little, and her complaints melted away as she was overcome with the feelings from her sensitive tits. He eagerly tormented her as she grew, and Julie was helpless to stop him.
“You’re… the… worst,” she struggled out through moans. Julie smiled. “I love… you… don’t… stop.” She could feel herself approaching yet another mind-blowing orgasm, at least the third of the day. It was impossible to tell just how big she was getting from her compromised position on the floor. Julie’s arms splayed out on top of her growing boobs. She was surprised as Francis stopped working on one nipple, but trying her best to look over the mass of her tits gave her a fraction of a second warning to what he was doing. Before she could process his movement, Francis had one of her nipples in his mouth, and gave it a gentle bite- not enough to be painful, just enough to drive his girlfriend crazier.
“Oh, god, please, Francis, don’t stop,” she commanded. “Don’t stop ever.” As he diligently worked, Julie was disappearing into heaven, and her first climax struck, quickly followed by another one. Her huge tits were unbelievably sensitive, almost anything Francis did could make her finish. She clenched her hands and curled her toes as the pleasure coursed through her, Francis seemingly insatiable in causing her to orgasm. By the time he stopped, Julie’s growth was finally complete. Francis stood looking at the disheveled mess of his girlfriend, her breasts extending probably four feet in front of her, her torso resting on top of them. Her butt wasn’t nearly as exaggerated, but it still looked preposterously huge in comparison to her waist.
“Francis,” she whispered, still lying on her tits.
“Yeah.”
“I need you to get my nonna over her. As embarrassing as it’ll be for her to see me like this… and as sexy as I feel with my tits like two lovesofas… I can’t stay like this.”