She does

Ashley had learned that holding it in was pointless, and she didn't have the best control of her bladder anyway, so when she felt the pressure between her legs she sighed and gave in. She felt immediate relief as a large amount of piss flowed out of her, seemingly more than should have fit inside her, being pumped through her outfit and causing it to inflate more, squeezing her all over, especially parts designed to squeeze and put pressure on her nipples and clit. She squirmed and fidgeted in the puffy padded costume and blushed at how horny it was making her. She wasn't looking forward to having to walk to class, not only was her suit so full she would awkwardly waddle but every movement would squeeze and rub her, and the guys loved to tease the girls while they were horny and stuck in their costumes peeing themselves.