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?

KATY PERRY

The singer's new royal-hued hair adds a pop of color to her loose, embroidered Temperley London gown, accessorized with an armful of bracelets and Sethi Couture ring at the ASCAP Pop Music Awards in Hollywood.