Last Night's Look: Hit or Miss?

Vote on this week's styles including Blake Lively, Rachel McAdams and more stars! You decide – are they fashionistas or flops?

GWEN STEFANI

She's one sexy date! The singer accompanies husband Gavin Rossdale (not pictured) to the London premiere of Sherlock Holmes in a chic black minidress paired with zip-up black and white checked booties and her signature red-hot lips.