Celeb Fashion Hit or Miss

Vote on this week's styles from Mary-Kate Olsen, Rihanna, Blake Lively and more stars! You decide – are they fashionistas or flops? By Melissa Liebling-Goldberg

  • SIENNA MILLER photo | Sienna Miller

Credit: Jim Ruymen/UPI/Landov

Updated: Friday Feb 29, 2008 | 11:35 AM EST

SIENNA MILLER

The British actress celebrates her nomination at the Film Independent's Spirit Awards in a Monique Lhuillier lace dress and a Rodo clutch.