On the surface, the two actresses are wearing completely different dresses. The Immortals star has on a racer-back sundress that's as flowy on the bottom as it is formfitting on top. Her hair is in a tight updo and she's accessorizing with silver sandals.
It's almost the polar opposite of the Spring Breakers star's ensemble: A tight, strapless mini worn with wild, curly hair and pointy black pumps. The only thing they have in common is designer Antonio Berardi's signature patchwork effect in black, blue and white.
Oh, and the fact that they're both on one of Hollywood's hottest starlets.
We're going Selena on this one because the cut is more flattering. But what's your take?