2012 iHeartRadio Music Festival - Day 2 - Backstage
(L-R) Recording artist Joel Zimmerman aka Deadmau5, TV personality Kat Von D, and musician Steven Tyler backstage during the 2012 iHeartRadio Music Festival at the MGM Grand Garden Arena on September 22, 2012 in Las Vegas, Nevada. (Photo by Isaac Brekken/Getty Images for Clear Channel)
iHeartRadio Festival 2012!
Check out photos from the massive iHeartRadio Festival 2012 in Las Vegas!