FLASHDANCE The cocktail circuit is in full swing and every chicette worth her Louboutins is taking time to reflect on her holiday best. Fashion’s obsession with all things glittery shows no sign of fading, and no piece serves you better this season than flashy frocks and metallic minis. So glow on, cement your status as a bona fide golden girl and dress to impress. 1. Polyester/ spandex, $154, X:S Clothing. 2. Polyester, $299, Roberto Cavalli at H&M. 3. Silk, $520, Catherine Holstein, TNT Blu.