As they moved into the bedroom, she felt a hard smack on her ass, and squeaked to herself, as her large booty wobbled. Immediately the warmth moved down there, and she knew that her butt was growing. She couldn’t believe it – her butt too! But that was already so large – what would it look like bigger? She didn’t get to find out, as Nick threw her onto the bed, her fat tits wobbling as she lay on her back. They ballooned up into the air, and she found herself looking a large canyon of cleavage bulging up as she looked, swelling larger and larger.

“I want you to grow out of those jeans.” Nick grunted, flipping her onto her back, and smacking her fat ass again.

“But they’re already so tight!” Marina moaned, loving being ordered around, and adoring the sensation of denim stretching as Nick’ hand made contact with her ass, and her enormous cheeks wobbled as he hit them. Her butt was really big now, curving out from her slender form as if a pump had been shoved up her ass. It was bulbous and humongous, and every slap inched it larger. She could feel the tightness of her jeans as her ass expanded into them, and wondered if she’d even be able to take them off now. They were digging into her waist, as her big butt wobbled into the air, swelling larger and larger.

“I’m gonna make you grow.” Nick growled, as he pressed his rock hard cock against Marina’s butt and made her swell into it. She could feel her ass expanding, huge cheeks enveloping Nick’ cock as her butt expanded. All the while, she could feel his hands running over her arms and body, her top getting smaller and smaller as her breasts grew bigger and bigger. They were nearly as wide as she was, and getting larger. And then she started to grow taller.

“No, not taller!” She cried, as her body began to stretch. Her thighs lengthened and thickened, straining her jeans even tighter as she grew and grew. Seams began to burst open as she expanded, and she knew she was going to rip out of them soon. She couldn’t believe this was happening. It felt so good.

All the while, her body was lengthening. Her bare feet were growing as the tops of them pressed into the bed, and she could feel her body stretching, her arms elongating, her torso moving forwards, even as her breasts expanded. Oh god, in all the time she was thinking about her gigantic ass, she hadn’t paid attention to her breasts – they felt huge now! She could feel them looming down from her slender, growing torso, and they felt like huge bags of meat, massive udders that wobbled heavily and slowly beneath her.

Then her jeans ripped open.

“Fuck yeah”, Nick grunted, as he smacked her fat, wobbling butt one last time and her pants tore apart. Marina’s massive, expanded rear bulged up into the air, and her underwear was practically invisible, swallowed by the gigantic cheeks that seemed to gobble them up. Nick grabbed her butt with both hands, and she felt power pulsing into it. He leaned down, and with his teeth tore off the remnants of her underwear and smacked her fucking huge ass one last time. She cried with pain and joy as her ass expanded again, and felt Nick’ bare skin against her, and knew the growth wasn’t done yet.

Now the growth began in earnest, as Nick undressed and slid his generous cock into Marina’s dripping, waiting cunt. She could now feel his power emanating around her whole body, and she begged her master to fuck her. For he was her master now, in this joyous scene of domination and growth. He was her master, and she was his slave. His growing slave.

“Fuck me, master!” She cried, and Nick began to move his large dick inside her tight, wet cunt. Immediately she began expanding again, more forcefully this time. Nick could feel her huge ass growing into his crotch as he pumped her bigger, still spanking her ass and making it expand, pushing into him and making him more turned on than ever.

Then he leaned down and reached under Marina to see how her boobs were doing, and nearly blew his load there and then. Her tits had slowly groaned larger and larger over the past few minutes, and were now positively gigantic. They hung down from her expanding figure like overripe watermelons, and were curving out of the bottom of her top as if it was a pathetic sports bra, bulging out of it in all directions.

With every pump of his impressive cock, Nick sent her huge tits jiggling and slapping underneath her, even as they bulged larger. Soon they were so big they were entirely pressed together underneath her, and there was barely any room for movement. Instead they grew larger, spreading outwards, past Marina’s shaking arms, which were barely holding her huge, heavy form upright as she crouched on all fours on the creaking bed.

Luckily, Marina was growing taller and larger as her tits expanded, meaning that every time her boobs swelled down to the point where they were brushing against the bed, her arms and legs would grow a little longer, and her tits would have a little more room to expand. Soon, her huge, fleshy balloons were brushing against the surface of the bed permanently, though – they were just too big. Now her fat, erect nipples were being sent into a frenzy by draping themselves across the fabric, and her cannonball-sized tits were pushing into the sides of her arms as they grew bigger.

Nick was in paradise as Marina grew bigger. Her ass was so huge she was almost pushing him out of her cunt, so he focused on making her taller and more busty. Her tits were now completely stuffed, and had pulled her shirt up to her chin, as there simply wasn’t room for it. It rested up there like a child’s bib as her breasts approached the size of small beach balls.

At this point, Nick reached around with one hand and started to massage the side of one of them. It was so gigantic and full that he knew he wasn’t going to last much longer, so flipped Marina onto her front, slid his cock back in, and prepared for the final push.

By now, Marina was nearly 7 ft, and was pouring off the bed in every way. Her butt was the largest one Nick had ever seen, and her legs were almost on the floor, even as she lay back on the bed. Nick was fucking Marina in her beautiful, tight cunt, and pushing her humongous tit together as he fucked. When bulged up into one another, they looked insane, even larger than the large beach balls they’d become, and Nick felt his cock pulse one last time. He was going to come, to lose his virginity, and it was going to be explosive.

At the same time, Marina looked down at her titanic boobs, which were all but obscuring Nick as they fucked on the bed, and knew her master had done incredible things to her. She felt like the biggest person in the world, and felt such power that she knew she was going to come, and that her orgasm would be sensational. Her immense body was filling up with arousal, and even though it was growing, there was no more room for her passion – it was going to explode out in an orgy of ejaculation.

And as she felt Nick come inside her, firing bolt after bolt of hot, thick jizz, Marina felt her long hair, which now only reached a little way down her tall, powerful back, and felt her massive ass, which bulged into the bed like two huge balloons, and felt her truly gigantic tits, which were like over-inflated beach balls and blocked everything from view, and started to come.

It was like a tidal wave, a tsunami of passion, starting slowly from a distance, then building and building before crashing over her, causing her immense body to scream and shake and wobble and grow as Nick came inside her and she expanded out of control in every direction.

It was thought-obliterating and utterly all-consuming, and Marina could scarcely believe when it was over. It was the first time in her life that she’d felt truly satisfied, she realised. But what utter, utter satisfaction.

She looked down at Nick, who seemed somehow small and puny next to her gigantic form, and smiled a toothy grin. He wasn’t a short man, but she was over 7ft now, and had breasts the size of large beach balls; everyone was going to look small compared to her. She tried to get to her feet, but was too huge and too spent. It was going to take a while to get used to being this big.

Nick lay on the bed, looking up at the ceiling, barely able to muster the strength to smile. That had been incredible, he thought to himself.

He looked over at Marina, the biggest woman on the planet, in almost every way, and his mouth reflexively twitched and perked up at the corners. How could he not smile.

Marina grinned back. Incredible. She thought to herself. Absolutely incredible.

And she reached out, not caring about the consequences, about the tingling, about the potential further growth and took Nick’ hand. She gave it a squeeze.