Some of the biggest names in Hollywood stepped out to attend the 2014 iHeartRadio Music Awards at the Shrine Auditorium in L.A. on May 1 -- including Jennifer Lopez, Hilary Duff, Jared Leto, and more. See what the stars wore
Hot mama! Stefani attended the show in a long-sleeve belted LBD.
Credit: Kevin Mazur/Getty Images for Clear Channel