At yesterday's Louis Vuitton show in Paris, the famous siblings were among the celebrity-studded crowd to witness Marc Jacobs unveil his final collection for the brand. Dakota and Elle, both of whom have modeled for the designer's eponymous lines, looked lovely in contrasting outfits from the Louis Vuitton 2014 resort collection. While Elle decided to wear an all-white embroidered two-piece with teal sandals and her long hair down, her older sister went to the dark side, choosing a more risqué, sheer black maxi showing off a mini lingerie-inspired dress underneath. Elder Fanning also tied her hair into a sleek chignon. Which look do you prefer? It's hard to pick a favorite when we're still trying to process the fact that they've grown up so fast.