Last Night's Look: Hit or Miss?

Vote on this week's styles including Sienna Miller, Nicole Richie and more stars! You decide – are they fashionistas or flops?

CIARA

The singer cuts an enviable figure in a curve-hugging white sheath Herve L. Leroux dress topped with a sparkling statement necklace for the G.I. Joe: The Rise of Cobra premiere in Hollywood.

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