"Mrowl", she says through a feline muzzle. Something about Selina's rubber skin is stretchy yet tight, resisting her attempts to fondle herself in a way which only made it more fun. Being made of solid latex makes her breasts feel "fake", like a pair of gel-filled stress balls. Poking idly at the rest of her body leads her to believe her entire body is like that- no muscle, no bone, just a magically animated machine. Meanwhile, her vagina (she doesn't really feel like calling it a "pussy") is amazing; she could swear she feels herself loosening up as her arousal grows, yet her fingers still barely fit into her narrow inner sanctum. Just rubbing on the outside of her groin feels heavenly, but she needs more, dammit, MORE!
It's getting even tighter for some reason. She opens her eyes and looks down to see what the problem is, and-
"MEOW?!?!"
Where she once had the dexterous digits of a professional burglar, Selina's hands have instead become pudgy cat paws with three thick, stubby fingers and a thumb which barely counts as a thumb. The plain gloves she once wore now have delicate-looking pink beans on the fingertips and soft paw pads on the palms. In the throes of an unfinished orgasm, however, all that worries her is that it's getting harder and harder to finish herself off! She takes a deep breath- despite not really needing to breathe with a solid latex body- and grunts as she forces her paw deeper into herself! Her legs kick and twitch from the extra strain, causing her to notice that she now has soft, rounded three-digit paws for feet.
Squeak, squeak, squeak! Selina pushes into her vagina faster and faster, trying to finish before things get even stranger. It's a bit too late for that, however, as she starts to feel herself shrink... but not get any lighter. In fact, it feels more like her expanding breasts and butt cheeks are stealing body mass from her core! Her arms, legs and torso all get shorter and smaller, while even her head begins to swell up.
Frustration begins to turn into fear as she realizes that the changes are rapidly getting out of control. "Mew, roooowr", she says like a lonely stray cat! Just... a little... more!
"RrrrROWL!!!"
And just like that, she's pushed over the edge into a world-rocking orgasm! She basks in the afterglow for a few minutes, uncaring of whatever weird stuff her body is doing for the moment. As if by instinct, she licks her hand-paw and wipes behind her kitty ear. Won't do her any good to be dirty after all. She decides that a bath would probably be easier-
-And she free-falls off her bed! No more than a meter and a half tall, she bounces off the carpet like a dog's squeaky toy and hisses angrily. "This sucks, what's even going on? Stupid Bodyshapers... nya..."
It isn't until she fills up the bathtub that she spies her reflection in the shallow water. Her eyes have become huge and friendly with long cartoon eyelashes, and her muzzle is fixed in a figure 3 smile. She should be annoyed that she lost her old good looks, but the lingering tingle in her body reminds her that she's still got it where it counts. No, what annoys her right now is that she can't exactly perform any burglaries with this new body! She made bank because she was athletic and looked nondescript enough to break into buildings, yet right now she is neither of those things. She was out of a job, unless... hmm.
maybe she CAN pull off a heist, but she'll have to...