Celeb Fashion Hit or Miss

Vote on this week's styles from Mary-Kate Olsen, Rihanna, Blake Lively and more stars! You decide – are they fashionistas or flops? By Melissa Liebling-Goldberg

MILEY CYRUS

After donning a red Valentino gown for her first Oscars, the young star slips back into colored H&M jeans and an Urban Outfitters T-shirt backstage at a taping of Randy Jackson's America's Best Dance Crew.