Hedi Slimane is in a grunge state of mind for Fall 2013. With a booming soundtrack by Thee Oh Sees, models (Hanne Gaby Odile, Lindsey Wixson, 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 don’t go thinking that Slimane has 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 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 story telling and the craftsmanship that the house is known for.