Last Night's Look: Hit or Miss?

Vote on this week's styles Jessica Simpson, Rihanna and more stars! You decide – are they fashionistas or flops?

KOURTNEY KARDASHIAN

The reality star keeps up with the latest trends in a shiny gray minidress draped with gold chains and accented with strappy platforms matched to her exotic Adriana Castro clutch to celebrate her sister Khloe's 25th birthday in Las Vegas.

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