Huge stars will be hitting the stage to perform at the iHeartRadio Music Festival in September.

Clear Channel announced the fest's lineup earlier today (July 23) to the screams of pop fans everywhere. Taylor Swift, One Direction and Ariana Grande will all be performing their massive hits at the MGM Grande Garden Arena in Las Vegas. (Taylor and Harry in the same location? We can already imagine the headlines!)

With all three acts working on their next albums, it's almost a guarantee new music will be gracing the fest. But if the temptation of hearing previously unperformed tunes isn't enough to draw a massive crow, then performances by Coldplay, Ed Sheeran, Iggy Azalea and Nicki Minaj definitely will.

And we’re still not finished listing all the performers! Fans of Lorde, Usher, Paramore, Calvin Harris, Motley Crue, Zac Brown Band and Eric Church will also be flocking to Sin City to see their music idols.

The star-studded festival will take place on Sept. 19-20, and tickets go on sale Saturday (July 26).

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