Last Night's Look: Hit or Miss?

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

RIHANNA

Before her duet with Britney Spears, the singer steps onto the red carpet in a white Max Azria suit, Solange Azagury-Partridge jewels and Christian Louboutin heels at the Billboard Music Awards in Las Vegas.