Last Night's Look: Hit or Miss?

Vote on this week's styles including Megan Fox, Kristen Stewart and more stars! You decide – are they fashionistas or flops?

KATY PERRY

Looking like she's swung in straight off the set of Tarzan, Katy rocks a strapless leopard-and-lace minidress by Dolce&Gabbana and platform peep-toes.