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

London's weather might be chilly, but Gwen manages to keep cozy in a layered look, topping leggings and a sweater with a classic trench coat, and throwing a coordinated scarf into the mix.