A curse based on body parts

These curses involve specific body parts.

Is it accident prone Katherine, who despite stumbling into danger at seemingly every turn, never seems to get left with even the smallest scar or bruise? She doesn't get off totally scot-free, however, as she winds up losing anything covering the part of her that would have been injured.

Is it Nishi, short but full figured, creative and headstrong, who can't cover her top half and bottom half at the same time?

Is it Sylvia, the normally svelte girl of average height, whose body-type changes everyday in different ways until her clothes can't take it? One day she could become a bombshell, a bodybuilder, a big beautiful woman; it doesn't necessarily have to be even all over, either. The only thing certain is that it usually happens at the worst possible moments...

Or is it someone else, with a different curse?