Last Night's Look: Hit or Miss?

Vote on this week's styles including Diane, Vanessa, Katie and more stars! You decide – are they fashionistas or flops?

RIHANNA

Though her ad for her new perfume Reb'l Fleur was spicy, the star is all sugar in a floral miniskirt, long-sleeved crop top and nude pumps with Amrapali earrings and rings at an in-store event at California's Lakewood Mall.