At last night's Inner Circle bash for the City Hall Press Corps, the Mayor performed with the cast of the campy Broadway roller-disco musical Xanadu. Bloomberg wore two ridiculous costumes that belong to two different City tribes— the gays and the hipsters. At left, an absolutely flaming photo of the Mayor in vaudeville dandy gear surrounded by boys in togas. In the shot on the right, Mike wears an ensemble straight out of the Lower East Side complete with shiny, purple American Apparel spandex and leg-warmers. So where do his loyalties really lie? Is Mayor Mike a gay or a hipster?