This is the Chicago which has incubated a transatlantic fusion of Vogue Dramatics and parkour. Night and day, the David Belles and the Alloura Zions zig-zag through its grid, a cross-dressing of the Situationist pavements of the banlieues with the inner city ballrooms of the P.U.S.S.Y.C.U.N.T.Y.B.I.T.C.H. Up on the aerial dance floors threading together the city's boom-era tenements, they trace the horizontal falls of Yves Klein and Don DeLillo. During the ball season, they battle it out on invisible catwalks like Archaeopteryxes, their legs akimbo and their talon-like arms swiveling and pirouetting.