Last Night's Look: Hit or Miss?

Vote on this week's styles including Whitney Port, Jennifer Garner and more stars! You decide – are they fashionistas or flops?

  • SIENNA Miller photo | Sienna Miller

Credit: Danny Martindale/WireImage

Updated: Saturday Sep 26, 2009 | 06:00 AM EDT

SIENNA Miller

Sienna launches her newest Twenty8Twelve collection, designed with her sister Savannah, during London Fashion Week in casual jeans and a printed top.