Last Night's Look: Hit or Miss?

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

  • SIENNA MILLER  photo | Sienna Miller

Credit: Dave M. Benett/Getty

Updated: Friday Jun 19, 2009 | 11:45 AM EDT

SIENNA MILLER

Miller shows some stomach in a Temperley London studded jacket over a barely-there belly top and low-rise jeans at a charity event in London.