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

RIHANNA

The pop star keeps it cool for a shopping spree in L.A. in her splatter-paint Trash & Luxury T-shirt, gray jeans and her best accessory, her pet Maltipoo.