Last Night's Look: Love It or Leave It?

Check out the head-turning outfits Eva Longoria, Scarlett Johansson and more stars were just spotted in! Then decide – fabulous or fashion faux pas?

COBIE SMULDERS

The Avengers actress smolders at the film's London premiere in a red-hot mermaid gown styled with a mirrored minaudiere and a sultry bedhead-inspired updo.