She wears it but the suit has a surprise in its gear!

Valerie hesitated only a moment longer before pulling the short wetsuit on.

"Better wear it lest my handlers find out."

The neoprene clung to her skin as she worked it up over her hips and torso, the material was cool and slightly stiff. She sealed the zipper, strapped the small tool pouch to her thigh, and slipped on the mask and fins. The taste of salty air lingered on her tongue and intensified as she slipped over the side into the black water. Slowly she swam forwards towards her target.

She surfaced in the shadow of the stern, removed her fins, and hung them from a cleat before hauling herself up onto the swim platform. Water streamed down her body. The wetsuit already felt oddly tight across her midsection. She pressed a hand to her stomach and frowned. A soft, low pressure was building inside her, the kind that usually meant she had swallowed too much air while diving.

"I'll burp myself once I'm on the yacht proper." She thought.

She ignored it and moved forward, bare feet silent on the deck. The pressure grew and by the time she reached the side door leading into the main cabin, her belly had rounded noticeably under the black neoprene. A soft gurgle rolled through her gut. Valerie winced and pressed both hands against the swell, trying to force the gas downward, anything to relieve the pressure inside of her.

Instead, the pressure simply shifted lower, spreading into her hips and right into her curvaceous ass. The wetsuit stretched taut across her backside, the seam between her cheeks digging in as the flesh beneath it began to push outward. Too focused on her task, the super spy had yet to catch on to her strange transformation.

The origins of this lied with her organization. The agency had issued the gear that morning with no special warning. Whatever new compound they had used to improve buoyancy or seal integrity was reacting to the residual chemicals still lingering in her system from the months of conditioning from her prior mission. It was a slow, insidious, and frankly embarrassing process. Each step she took sent another soft pulse of gas into the lower half of her body. Her hips widened by small degrees. The short legs of the wetsuit rode higher, the fabric stretching thin and shiny over the expanding globes of her ass. The spy didn't notice it, only an intense wedgie she attributed to her dislike of clothes that she had developed. Valerie reached the cabin door and paused, one hand still pressed to her swelling stomach. The pressure was no longer merely uncomfortable. It was beginning to feel… full.

Heavy. A low, unwanted throb of arousal curled through her as the neoprene dragged across her nipples with every breath.

She bit her lip and forced the door open just enough to slip inside. The interior was dim and quiet. She moved through the narrow corridor toward the indicated stateroom, each step making the suit creak softly. Her ass had grown enough that the material no longer fully covered the lower curves; the bottom of each cheek peeked out beneath the stretched hem, pale and smooth in the low light. The tool pouch on her thigh dug into the new softness of her hip. She found the locked drawer exactly where the intel had said it would be. She kneeled and felt an intense wedgie crawl up her asscrack.

The position forced her expanding rear higher, the tight neoprene splitting further until both cheeks were fully on display, the cleft between them forced open by the sheer volume of flesh. A soft, continuous hiss of gas filled the quiet room as her body continued to take it in.

Valerie’s hands shook as she worked the lock. She could feel the weight of her own hips now, the way they forced her thighs farther apart just to keep balance. The pressure inside her was no longer confined to her belly; it had settled deep in her ass, stretching the walls of her from the inside, making every small movement send a humiliating jolt of sensation straight to her core. Ignoring this delightful pleasure, she focused on her objective, waiting until the drawer clicked open to hastily plunder its contents.

"Where are you? I got to see someone about this gas problem." She muttered. Her eyes widened with recognition as the goal of her infiltration appeared in front of her. The memory module sat in a foam cradle. She reached for it, and as she did, her wetsuit decided to give up. The zipper split from the base of her spine, rushing upward with a soft, wet sound before it released from its notches with a 'ting' that rattled the agent.

Cool air kissed the bare skin of her lower back and the upper curves of her now-massive ass. The fabric peeled away from her cheeks entirely, leaving them free and heavy, her skin was stretched smooth and tight. A soft, involuntary moan escaped her as the last of the pressure equalized, her hips and rear continuing to swell just a little more, just enough that she could no longer close her thighs.

The agent took one glance down and shrieked.

"What's? What's happening to me?" She asked.