A popular fan-made mod for TF2 that redesigns the Pyro into a more feminine bodysuit look. It can do NSFW.

Trigger:
femmepyroxl

Outfit:
gas mask, helmet, black leotard, red breasts, shoulder straps, gloves, thigh boots, belt pouch, zipper, red sleeves, red bodysuit, cylinder tank on back

You can change the color of the bodysuit by simply changing -red- to color of choice.