Los Angeles

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Dan Reynolds, of the musical group Imagine Dragons, speaks at the iHeartRadio Music Awards at the Shrine Auditorium on Thursday, May 1, 2014, in Los Angeles. (Photo by Chris Pizzello/Invision/AP)

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Lionel Richie, right, presents the award for best lyrics to Billy Ray Cyrus, who accepts on behalf of Miley Cyrus at the iHeartRadio Music Awards at the Shrine Auditorium on Thursday, May 1, 2014, in Los Angeles. (Photo by Chris Pizzello/Invision/AP)

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Usher performs 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. (Photo by Chris Pizzello/Invision/AP)

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Ariana Grande performs at the iHeartRadio Music Awards at the Shrine Auditorium on Thursday, May 1, 2014, in Los Angeles. (Photo by Chris Pizzello/Invision/AP)

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Austin Mahone poses in the press room with the award for iHeartRadio Instagram at the iHeartRadio Music Awards at the Shrine Auditorium on Thursday, May 1, 2014, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)

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Sean "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. (Photo by Chris Pizzello/Invision/AP)

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Rihanna accepts the award for song of the year for "Stay" at the iHeartRadio Music Awards at the Shrine Auditorium on Thursday, May 1, 2014, in Los Angeles. (Photo by Chris Pizzello/Invision/AP)

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Shakira performs at the iHeartRadio Music Awards at the Shrine Auditorium on Thursday, May 1, 2014, in Los Angeles. (Photo by Chris Pizzello/Invision/AP)

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Kendrick Lamar poses in the press room at the iHeartRadio Music Awards at the Shrine Auditorium on Thursday, May 1, 2014, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)

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Blake Shelton performs at the iHeartRadio Music Awards at the Shrine Auditorium on Thursday, May 1, 2014, in Los Angeles. (Photo by Chris Pizzello/Invision/AP)

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Gwen Stefani presents the iHeartRadio innovator award at the iHeartRadio Music Awards at the Shrine Auditorium on Thursday, May 1, 2014, in Los Angeles. (Photo by Chris Pizzello/Invision/AP)