Nicki Minaj, Usher, Ariana Grande, Iggy Azalea, Coldplay, and many more are all set to perform at the 2014 iHeart Radio Music Festival. The two-day festival goes down in Vegas at the MGM Grand Hotel and Casino on Sept. 19 and 20th. Ryan Seacrest will be hosting this year's show once again, which will be broadcasted across Clear Channel stations, and will stream live on Yahoo both nights. Taylor Swift, Motley Crue, Zac Brown Band, One Direction, Ed Sheeran, Paramore, Train, Eric Church, Lorde, Calvin Harris, Bastille and Steve Aoki are all currently set to take the main stage. 

Additionally, the daytime iHeart Radio Music Festival Village is coming back this year with performances from Childish Gambino, Lil Jon, Neon Trees, Kacey Musgraves, and more. For more information on this year's event, head over to the iHeart Radio site now