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?

FERGIE

The newlywed shows her support at the season finale of American Idol in L.A. in a plunging blue Alexander McQueen minidress, chunky cuff and matching Stuart Weitzman sandals.