All the sex appeal — with a classic ladylike twist — you'll ever need came courtesy of Marc Jacobs's knockout lineup at Louis Vuitton's Fall '13 show. With an intimate circular set surrounded by "hotel doors," the scene felt as sexy as the slinky velvet dresses, luxe outerwear, and tweedy nipped-waist silhouettes that came parading out. See it all here — and make sure to watch out for Kate Moss's epic appearance, too.