The only thing better than an old fashioned Hollywood feud is a Hollywood fashion faceoff! Get ready for a style showdown in this edition of Who Wore It Best? Selana Gomez rocked an adorable bustier to her Spring Breakers premiere, but did Katy Perry look better in the same top at Coachella? Then there's Olivia Munn vs. Nicky Hilton. Both girls went floral in a springtime dress by Valentino, but who gets your vote? Finally, Rosie Huntington-Whiteley vs. Miley Cyrus--double fouls! The girls each decided to play referee in Chanel's black and white striped jump-suit, but we really don't like either!