Celeb Fashion Hit or Miss?

Vote on this week's styles from Renée Zellweger, Mariah Carey and more stars! You decide – are they fashionistas or flops? By Melissa Liebling-Goldberg

  • SIENNA MILLER photo | Sienna Miller

Credit: Ian Lawrence / Splash News

Updated: Friday Apr 04, 2008 | 11:45 AM EDT

SIENNA MILLER

The actress tops her slim gray ensemble with a flowing patterned scarf while walking in London.