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Open Image ModalRihanna accepts the award for artist of the year at the iHeartRadio Music Awards at the Shrine Auditorium on Thursday, May 1, 2014, in Los Angeles. (credit:Chris Pizzello/Invision/AP)
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Open Image ModalRyan Seacrest, right, presents Rihanna with the award for artist of the year at the iHeartRadio Music Awards at the Shrine Auditorium on Thursday, May 1, 2014, in Los Angeles. (credit:Chris Pizzello/Invision/AP)
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Open Image ModalJennifer Lopez left, and Ryan Seacrest present the award for artist of the year at the iHeartRadio Music Awards at the Shrine Auditorium on Thursday, May 1, 2014, in Los Angeles. (credit:Chris Pizzello/Invision/AP)
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Open Image ModalDan Reynolds, and from left, Daniel Platzman, Ben McKee, and Wayne Sermon of the musical group Imagine Dragons, accept the award for alternative rock song of the year for "Demons" at the iHeartRadio Music Awards at the Shrine Auditorium on Thursday, May 1, 2014, in Los Angeles. (credit:Chris Pizzello/Invision/AP)
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Open Image ModalAriana Grande performs at the iHeartRadio Music Awards at the Shrine Auditorium on Thursday, May 1, 2014, in Los Angeles. (credit:Chris Pizzello/Invision/AP)
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Open Image ModalPitbull, center, and from left, Paula Van Oppen, Emmalyn Estrada, Lauren Bennett and Natasha Slayton, of G.R.L., perform at the iHeartRadio Music Awards at the Shrine Auditorium on Thursday, May 1, 2014, in Los Angeles. (credit:Chris Pizzello/Invision/AP)
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Open Image ModalKendrick Lamar performs at the iHeartRadio Music Awards at the Shrine Auditorium on Thursday, May 1, 2014, in Los Angeles. (credit:Photo by Chris Pizzello/Invision/AP)
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Open Image ModalSean "Diddy" Combs presents the award for song of the year at the iHeartRadio Music Awards at the Shrine Auditorium on Thursday, May 1, 2014, in Los Angeles. (credit:Chris Pizzello/Invision/AP)
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Open Image ModalShakira performs at the iHeartRadio Music Awards at the Shrine Auditorium on Thursday, May 1, 2014, in Los Angeles. (credit:Chris Pizzello/Invision/AP)
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Open Image ModalBilly Ray Cyrus accepts the award for best lyrics on behalf of Miley Cyrus at the iHeartRadio Music Awards at the Shrine Auditorium on Thursday, May 1, 2014, in Los Angeles. (credit:Chris Pizzello/Invision/AP)
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Open Image ModalJared Leto performs at the iHeartRadio Music Awards at the Shrine Auditorium on Thursday, May 1, 2014, in Los Angeles. (credit:Chris Pizzello/Invision/AP)
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Open Image ModalDancers perform during the world premiere of Michael Jackson's song "Love Never Felt So Good" at the iHeartRadio Music Awards at the Shrine Auditorium on Thursday, May 1, 2014, in Los Angeles. (credit:Chris Pizzello/Invision/AP)
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Open Image ModalHilary Duff speaks at the iHeartRadio Music Awards at the Shrine Auditorium on Thursday, May 1, 2014, in Los Angeles. (credit:Chris Pizzello/Invision/AP)
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Open Image ModalParis Hilton attends the iHeartRadio Music Awards at the Shrine Auditorium on Thursday, May 1, 2014, in Los Angeles. (credit:Chris Pizzello/Invision/AP)
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Open Image ModalLil Jon speaks at the iHeartRadio Music Awards at the Shrine Auditorium on Thursday, May 1, 2014, in Los Angeles. (Photo by Chris Pizzello/Invision/AP) (credit:Chris Pizzello/Invision/AP)
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Open Image ModalRecording artists Bastille attend the 2014 iHeartRadio Music Awards held at The Shrine Auditorium on May 1, 2014 in Los Angeles, California. (credit:Jeffrey Mayer/WireImage)
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Open Image Modal(L-R) Singers Lauren Bennett, Natasha Slayton, Emmalyn Estrada and Paula Van Oppen of G.R.L. attend the 2014 iHeartRadio Music Awards held at The Shrine Auditorium on May 1, 2014 in Los Angeles, California.( (credit: Jeffrey Mayer/WireImage)
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Open Image ModalRecording artists Emblem3 attends the 2014 iHeartRadio Music Awards at The Shrine Auditorium on May 1, 2014 in Los Angeles, California. (credit:Frederick M. Brown/Getty Images)
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Open Image ModalSinger Adam Lambert attends the 2014 iHeartRadio Music Awards at The Shrine Auditorium on May 1, 2014 in Los Angeles, California. (credit:Frederick M. Brown/Getty Images)
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Open Image ModalShakira poses in the press room at the iHeartRadio Music Awards at the Shrine Auditorium on Thursday, May 1, 2014, in Los Angeles. (credit:Jordan Strauss/Invision/AP)
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Open Image ModalHilary Duff arrivals at the 2014 iHeartRadio Music Awards at The Shrine Auditorium on May 1, 2014 in Los Angeles, California. (credit:Steve Granitz )
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Open Image Modal(L-R) Recording artist Rihanna, TV personality Ryan Seacrest and actress/recording artist Jennifer Lopez backstage at the 2014 iHeartRadio Music Awards held at The Shrine Auditorium on May 1, 2014 in Los Angeles, California. (credit:Kevin Mazur/Getty Images )
2014 iHeartRadio Music Awards - Arrivals(23 of28)
Open Image ModalLOS ANGELES, CA - MAY 01: Singer Billy Ray Cyrus attends the 2014 iHeartRadio Music Awards at The Shrine Auditorium on May 1, 2014 in Los Angeles, California. (Photo by Frederick M. Brown/Getty Images) (credit:Getty Images)
2014 iHeartRadio Music Awards - Arrivals(24 of28)
Open Image ModalLOS ANGELES, CA - MAY 01: Model Courtney Bingham attends the 2014 iHeartRadio Music Awards at The Shrine Auditorium on May 1, 2014 in Los Angeles, California. (Photo by Frederick M. Brown/Getty Images) (credit:Getty Images)
2014 iHeartRadio Music Awards - Arrivals(25 of28)
Open Image ModalLOS ANGELES, CA - MAY 01: Recording artist Juicy J attends the 2014 iHeartRadio Music Awards at The Shrine Auditorium on May 1, 2014 in Los Angeles, California. (Photo by Frederick M. Brown/Getty Images) (credit:Getty Images)
2014 iHeartRadio Music Awards - Backstage & Audience(26 of28)
Open Image ModalLOS ANGELES, CA - MAY 01: Singer Adam Lambert backstage at the 2014 iHeartRadio Music Awards held at The Shrine Auditorium on May 1, 2014 in Los Angeles, California. iHeartRadio Music Awards are being broadcast live on NBC. (Photo by Jason Merritt/Getty Images for Clear Channel) (credit:Getty Images)
2014 iHeartRadio Music Awards - Backstage & Audience(27 of28)
Open Image ModalLOS ANGELES, CA - MAY 01: Recording artist Gwen Stefani backstage at the 2014 iHeartRadio Music Awards held at The Shrine Auditorium on May 1, 2014 in Los Angeles, California. iHeartRadio Music Awards are being broadcast live on NBC. (Photo by Jason Merritt/Getty Images for Clear Channel) (credit:Getty Images)
2014 iHeartRadio Music Awards - Backstage & Audience(28 of28)
Open Image ModalLOS ANGELES, CA - MAY 01: Actress/singer Jennifer Lopez poses backstage at the 2014 iHeartRadio Music Awards held at The Shrine Auditorium on May 1, 2014 in Los Angeles, California. iHeartRadio Music Awards are being broadcast live on NBC. (Photo by Jason Merritt/Getty Images for Clear Channel) (credit:Getty Images)