First of all, I have to say your descriptions are great. You're as skilled with ordinary descriptions as you are with "perverted" ones. You make it easy to visualize the characters' appearances and mannerisms. Their outfits and the failures of said outfits are also vivid. You also do a fine job of describing the sensation of being under the spell. And of course the sensations of the accidents are detailed.

The plot is also clever, with the ditzy girl copy-pasting the one girl's measurements onto every form, which leads to the wardrobe malfunctions, which leads to the extra unskilled dancers, which leads to the synchronized bodies, which leads to the synchronized bladders. I mean, it's not a long or profound story, but it's really creative and tightly plotted. Reading stuff like this makes me feel like an inadequate writer.

My main complaint with the story is that the ending is rather abrupt. I thought there was a second chapter at first (and the chapter has two titles with a slash between them, which just confused me more). I would have liked a description of the multi-accident from Vivian's point of view. It would have to be after Kerry realizes what happened, so as not to spoil the surprise, but I really feel it would help to read the visuals of the disaster as well as the sensations. I was also surprised the tight costumes didn't come into play in the climax. I thought you were setting up an accidental flashing. The only other negative thing I can think of is the nonlinear storytelling at the beginning, which isn't really necessary and can kind of confuse the reader.

Besides minor complaints, this is a very entertaining story that doesn't require knowledge of the Potterverse to appreciate. Nice work! Hope you win!

that was pretty good, too bad there wasn't more description of the group wetting, though the mental image of a group of kicking girls all wetting themselves on stage was very, very nice ^_^