LAS VEGAS, NV - SEPTEMBER 21: Entertainers Miley Cyrus (L) and Britney Spears attends the iHeartRadio Music Festival at the MGM Grand Garden Arena on September 21, 2013 in Las Vegas, Nevada. (Photo by... more 
LAS VEGAS, NV - SEPTEMBER 21: Entertainers Miley Cyrus (L) and Britney Spears attends the iHeartRadio Music Festival at the MGM Grand Garden Arena on September 21, 2013 in Las Vegas, Nevada. (Photo by Jason Kempin/Getty Images for Clear Channel) less 
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Getty Images | Photo By Jason Kempin / Getty Images for Clear Channel
Sun, Sep 22, 2013 1:11 AM EDT