"Trust me, she might not look it but she's a grower, not a shower. Get her riled up and she'll fill that shirt out like no one else."
The straps weren't going to last much longer and neither was Kim. Flames of arousal and fluster licked at her pink cheeks as her best friends sat on either side of her. Each heavy beat of her heart made her whole body pulse, her breasts inching forward with each one. Her tank top had mostly fit when she put it on that evening but now it was on its last legs. She wanted desperately to get up and go hide in her room, or, at the very least, change, but she couldn't move. She was rooted in place. All she could do was tremble and whimper and grow.
A pair of lips brushed against the left side of Kim's neck, a low chuckle vibrating between them. Michelle let a warm breath waft over Kim's sensitive skin. Down below, somewhere on the other side of the mountain of tit in front of her, Michelle's fingers drummed intentionally against the side of her flustered friend's leg. "Hmm... I don't know, Julie..." Michelle was doing her best to make her voice sensual and sultry and, by god, it was working. Kim let out a strained groan, her eyes fluttering. Michelle pressed on. "You said that she was a grower but... I just don't see it! Are you sure?"
The growing girl in the middle nearly melted into a puddle as Julie leaned in from the other side, resting her arms on Kim's shoulder and letting her own, rather large breasts squish against her upper arm. "What do you mean, Michelle?" She spoke innocently enough, but the way she ground her tits against Kim suggested otherwise.
Michelle leaned in, matching Julie's pose, talking to each other about the busty girl between them as if she weren't in the room. "Well, you said that if we worked together, and gave Kim a good tease, we might see some growing, but we've been at it all night and I just haven't seen it!" Michelle pouted. "I was really hoping to see a flustered cutie grow some absolutely gargantuan tits. Some truly monstrous udders. Some massive, sloshy milkers." With each lewd name, Michelle leaned in a bit closer and Kim tensed, her breasts swelling just a tiny bit larger. After the last one, Michelle leaned back just a little and breathed out a slow sigh. "But, I guess I'm just out of luck."
Too busy dealing with her growing tits, already sitting in her own lap, Kim never saw Julie bite her lip or the arousal that was forming on her face as well. "Oh, but Michelle! Haven't you seen?" Kim let out a yelp, her breasts surging in size, as Julie reached forward and grabbed one of the growing breasts between them. "All you have to look down here and you'll see some of the biggest, most beautiful, and still growing tits that you've ever seen!"
"...g-guys..." Kim had never made a more pathetic sound in her life.
Michelle feigned a gasp, glancing down towards the avalanche of tit spilling off of her friend's chest. "Oh, my goodness! How could I have missed those monstrous udders?! And... fuck me, they are! They're still getting bigger!"
"...g-guysssss..." As Kim squeezed her thighs together, the tits resting on top of them wobbled and sloshed. She was nearing her limit, but she wanted them to stop just as much as she wished they wouldn't.
A small bump was forming through the fabric of Kim's overworked top and Julie didn't hesitate to start making circles around it with her finger. "They're incredible, aren't they? So big and beautiful and round and heavy. God, it just makes you want to do all sorts of things to them, doesn't it? Tease them. Grope them. Squeeze them. Suck on them. Worship them. Bury your entire fucking head between them!"
The two women on either side of Kim started to giggle, but they were cut off by Kim's outcry. "Aaaahnnn~ GUYS! I—" She didn't have time to finish the thought. Her head shot back and another moan rolled out of her. She arched her back and thrust her chest forward. Before their eyes, Kim's tits ballooned outward. They expanded in every direction, growing bigger and heavier by the second.
Without any fanfare, the straps finally gave way and Kim's tits tumbled forward. They spread out under their own weight, covering her lap almost completely. Her nipples, now exposed to the air, quivered and twitched and ached for attention. "F-fuck..." Kim spoke through ragged breaths. "You guys... owe me... a new... shirt..."
The two women looked at each other. They looked down at the astronomically, impossibly huge tits between them. Michelle purred as she leaned in, placing a hand on the tit closest to her and burying her face against the crook of Kim's neck. She could feel the tit pulsing larger under her hand as she kissed her way up the side of Kim's neck, along the edge of her jaw, before nibbling on Kim's earlobe. The busty, growing woman was lost, moaning as she felt Michelle's breath on her ear.
In a low, husky voice, Michelle whispered, "Oh, Kim... You fucking goddess... I think we owe you a bit more than just a new shirt..."
