Last Night's Look: Hit or Miss?

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

RIHANNA

For the DKMS gala in N.Y.C., the star exuded edgy elegance in a plunging black gown with full peplum and long train, accessorizing the look with sparkling Chopard jewels and black patent pumps.