Last Night's Look: Hit or Miss?

Vote on this week's styles by Blake Lively, Mariah Carey and more stars! You decide – are they fashionistas or flops?

MILEY CYRUS

Going for grown-up elegance, the teen star slips into a blush Moschino Cheap & Chic halter dress, classic pumps, and jewelry by Robert Lee Morris for Elizabeth and James and Loree Rodkin at the MTV Movie Awards.