Rihanna, Taylor Swift and more at the iHeartRadio Music Festival

Slideshow posted in Photos | Monday, October 01, 2012

1 of 7: Singer Rihanna performs onstage during the 2012 iHeartRadio Music Festival at the MGM Grand Garden Arena on September 21, 2012 in Las Vegas, Nevada. ( Photo / Christopher Polk/Getty Images for Clear Channel)