Culturally, drow are both evil and matriarchal, so the females often enjoy displays of power over men. Revealing clothing is very common because it's a way for the females to display themselves as objects of desire while denying the males the opportunity to do anything about it. Basically, look but don't touch or I'll gut you and you can't stop me.
That part honestly bothered me slightly about Drow society. Why would the women actually care about teasing men? They usually don't care about men at all aside from mating purposes and house royalties.