Last Night's Look: Hit or Miss?

Vote on this week's styles, including Ashley Tisdale, Leighton Meester and more stars! You decide – are they fashionistas or flops?

  • KEIRA KNIGHTLEY photo | Keira Knightley

Credit: Dominique Charriau/WireImage

Updated: Saturday Sep 10, 2011 | 06:00 AM EDT

KEIRA KNIGHTLEY

The star stands out in a sweetly romantic sheer Valentino gown with golden details and simple accessories at the Venice Film Festival premiere of A Dangerous Method.