Hedi Slimane was in a grunge state of mind for Fall 2013. With a booming soundtrack by Thee Oh Sees, models (like Hanne Gaby Odiele, Lindsey Wixson, and Cara Delevingne) hit the runway in barely-there tartan plaid and floral-sequined babydoll dresses, many of which were topped with open flannel shirts or cozy Fair Isle cardigans. But Slimane hasn't lost his rocker edge; there was still plenty of that. Leather was a predominant motif in the collection; it came in the form of slashed leggings, soft peacoats, and a flurry of sexy minidresses that closed the show. The classic YSL motifs were also still there — a bow at the neck, fur chubbies, the Smoking tuxedo jacket — just shot through with a distinct edge. No flou in this lean collection; just storytelling and the craftsmanship that the house is known for.