Thanks to the annual BFI London Film Festival, we're turning our attention to the red carpets across the pond, where the likes of Parisian beauty Marion Cotillard and ingenue Elle Fanning are giving us twice the glamour to gush over. For their respective premieres, each of the actresses took a different approach. While Marion hit the red carpet with an understated albeit sexy Christian Dior LBD (straight from the Spring '13 runways, no less), Elle offered up a dose of sweet, girlie-inspired glamour in a full-length floral-print Rochas gown — just the kind we'd expect from the always-charming Elle, but maybe her best yet. Inside, we're giving you a glimpse of every angle. Click on to see both actresses' red-carpet ensembles in London — then tell us your pick for best dressed in comments.