@RyanSeacrest is set to once again host the greatest names in music including @TaylorSwift13, @Aerosmith, @Rihanna, @UsherRaymondIV, @BonJovi, @LilTunechi @GreenDay @SwedishHouseMafia, @NoDoubt, @BradPaisley, @Pitbull, @Deadmau5, @Miranda_Lambert, @enrique305, @LinkinPark, @Jason_Aldean, @Pink, @MaryJBlige, @CalvinHarris, and @Shakira - The 2012 @iHeartRadio Music Festival Lineup [VIDEO] http://shar.es/tvhQ9 via @sharethis
