It was cold, gray, and windy, and we were sitting in a concrete underpass that sat along an industrial stretch of the Seine — not the coziest setting for Anthony Vaccarello's Spring 2013 show. But we needn't have worried — the designer responsible for sky-high thigh slits brought the heat with his sexy collection. Anja Rubik, who made headlines in Vaccarello's white slit gown at the Met Gala, opened and closed the show, and Arizona Muse, Cara Delevingne, and Karlie Kloss all walked. The collection was almost entirely black and white, shot through with doses of metallic sheen, and some pieces were in blue and copper metallic leopard. There was a loose utilitarian feel, thanks to zippers, grommets, and banding, but it was done on soft silk so it felt fluid and sexy, not tough. I mean, if you're going to do sexy, you should really just go for it, and Vaccarello did exactly that. The short hemlines and barely there tops are ideal for party girls with big budgets.