Celeb Fashion Hit or Miss?

Vote on this week's styles including Sienna Miller, Julia Roberts and more stars! You decide – are they fashionistas or flops? By Melissa Liebling-Goldberg

Credit: Anthony Dixon/WENN

Updated: Friday Jun 20, 2008 | 11:40 AM EDT

RIHANNA

The singer makes a bold appearance at BET in knee-high Balenciaga gladiator sandals, Made Her Think jewelry and a black miniskirt.