Last Night's Look: Hit or Miss?

Vote on this week's styles including Rihanna, Kim Kardashian and more stars! You decide – are they fashionistas or flops?

RIHANNA

The singer adds signature edge to her white Derek Lam suit, rolling over the sleeves of her leopard-printed top and adding bronze platforms and a Yvel Pearl necklace for the opening of the new Derek Lam boutique in N.Y.C.