I don't have PMS, but I do hate myself in harem pants. I see other people looking fine in them, but they make me look like I've got elephantiasis, which I probably spelled wrong.
Hermes sandals--ugly as sin. They make everybody's feet look two sizes bigger. If I were dancing in a place where shoes were absolutely necessary and I couldn't wear ballroom shoes, I'd go for ballet slippers.
Tribal fusion hotpants and garters look.

I think that smiley sums it up.
Crookedly attached fringe. Asymmetrical is one thing, shoddy workmanship is another entirely, as is not being bothered to fix it.
Too-long bra straps.
I'm sure I can think of more if I ponder it...