Mariah Carey
In something of a deviation from the norm, Carey actually started out fairly conservative (remember "Vision of Love?"), but has gotten more risque in concert as the years have passed. Now, there are entire web pages devoted solely to her...slips.
Kelly Rowland
Well, that's one way to one-up your former bandmate. For real, though: was that costume actually supposed to conceal her breasts at any point?
Høst
Lest anyone think I'm picking on women. Granted, the odds you've seen Norwegian black metal outfit Taake live are pretty slim, but maybe I've given you a reason to seek them out
But probably not.
Janet Jackson
The Grand Dame of the Fashion Faux Pas hasn't been quite as visible in the years since Super Bowl XXXVIII. Another casualty of the FCC. Justin Timberlake, on the other hand, is more popular than ever, mostly for singing about his dick, which we still haven't seen. Funny old world.