Last Night's Look: Hit or Miss?

Vote on this week's styles including Jennifer Lopez, Kim Kardashian and more stars! You decide – are they fashionistas or flops?

SIENNA MILLER

There's nothing army-issue about the G.I. Joe: The Rise of Cobra actress's graphic-printed Diane von Furstenberg minidress and sky-high booties, which she wore for a press conference in South Korea.