Award Shows May 18, 2015 Natalie Portman’s Peek-a-Booty Dress and More Fashion at Cannes! Natalie Portman flashed the crowd at the Cannes Film Festival on Sunday in a sheer skirt that showed off her black underwear… and very toned backside. The “Black Swan” actress wore a Rodarte dress on the red carpet to promote her new film, "A Tale of Love and Darkness," which she also directs. [Credit: Getty Images] Hollywood was in full force on the French Riviera showing off their fashion hits and misses this year. Take a look at our gallery! Waiting for your permission to load the Instagram Media. #CannesFilmFestival #Fashion #NataliePortman #TrendingStories More Julianne Moore and Naomi Watts Look Fab in Feathers at 2015 Cannes Film Festival Lupita Nyong’o Makes Grand Entrance at Cannes in Gucci Gown! Emma Stone Rocked a Prom-Inspired Dress at Cannes!