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Rihanna, Taylor Swift and more at the iHeartRadio Music Festival

<div class="meta "><span class="caption-text ">Singer Rihanna performs onstage during the 2012 iHeartRadio Music Festival at the MGM Grand Garden Arena on September 21, 2012 in Las Vegas, Nevada. (Christopher Polk&#47;Getty Images for Clear Channel)</span></div>
November 1, 2012 12:51:07 PM PDT