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

RIHANNA

The singer shows off her dancer's form in latex leggings, a ruffled Thomas Wylde top, Made Her Think jewelry, Temperley London hat and lace-up boots backstage at the MuchMusic Video Awards in Toronto.