Seeing as Ashley Olsen's boyfriend Justin Bartha stars in The Hangover, it's no surprise that his girl and her twin were there to support him at the LA premiere. By now it's super clear that Ashley and Mary-Kate's styles are polar opposites, even though their faces are so similar. Ashley, ever the minimalist, walked the red carpet in a long black Calvin Klein dress and chunky sandals, while the accessory-loving Mary-Kate wore a printed TopShop minidress, black blazer, Prada slingbacks, and her signature round sunglasses. I'm usually on Team Ashley but this one is a toughie. Who do you think looks more Fab?