Last Night's Look: Hit or Miss?

Vote on this week's styles including Carrie Underwood, Kim Kardashian and more stars! You decide – are they fashionistas or flops?

RIHANNA

It's a girl's night out for the fashion-forward singer who goes avant-garde in a multi-colored tulle Viktor & Rolf minidress complete with coordinating pumps and her signature fierce Mohawk at the Clive Davis Pre-Grammy bash.