The 2017 iHeartRadio Music Festival lineup was revealed on Tuesday (July 18), and two of the biggest names in country music are on the docket. Thomas Rhett and Chris Stapleton will both take the stage during the two-day festival, with Stapleton performing on Sept. 22 and Rhett the following night, on Sept. 23.

They represent country among other superstar acts in a variety of other genres: Coldplay, David Guetta, Lorde and Kesha. Kenny Chesney's "Setting the World on Fire" collaborator Pink will also perform, as well as Miley Cyrus and Harry Styles, who's taking Kacey Musgraves as an opening act on select dates of his upcoming 2018 Live on Tour gig.

Ryan Seacrest is set to host the 2017 iHeartRadio Music Festival live in Las Vegas at the T-Mobile Arena.

In addition to a main stage, the festival will also feature a Daytime Village area at the Luxor Hotel and Casino, where Kelsea Ballerini will serve as the lone country act alongside a host of other talent including Hey Violet, All Time Low, French Montana, Noah Cyrus and former One Direction member Niall Horan.

Until the big Vegas show, all three country acts are out on the road. Stapleton continues on his 2017 All American Road Show Tour through the end of the summer, wrapping on Aug. 25 in New Hampshire. Rhett is on his wildly popular Home Team Tour, while Ballerini has a jam-packed schedule between serving as an opening act on Rhett's tour and Lady Antebellum's You Look Good Tour. She recently released her new single "Legends" off her upcoming 2017 album.

See Which Country Tours Are on the Road in 2017