Last Night's Look: Hit or Miss?

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

EVANGELINE LILLY

All eyes are on L'Oreal's newest face at the Chopard Trophy event, in her peacock-blue ombré Valentino gown, strappy sandals and – of course – a wealth of Chopard jewels in Cannes.