Last Night's Look: Hit or Miss?

Vote on this week's styles including Blake Lively, Ashlee Simpson-Wentz and more stars! You decide – are they fashionistas or flops?

PARIS HILTON

After spending a glamorous day by the pool, the heiress dresses up in a jeweled white DSquared gown and her signature sparkling headband for the Creative Coalition event at Cannes Film Festival.