iHeartRadio Music Festival 2013 Lineup Announced by Ryan Seacrest: Justin Timberlake, Katy Perry, Miley Cyrus Among Headliners [FULL LINEUP]

Today (July 15), Ryan Seacrest announced the lineup for the iHeartRadio Music Festival 2013 via his radio show and Twitter account. The multi-genre, multi-day music festival will take place Sept. 20 and 21 at the MGM Grand in Las Vegas. Justin Timberlake and Katy Perry will headline. Read More »