Britney Spears, Drake, Ariana Grande Among Star-Studded iHeartRadio Music Fest Performers

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Now this is a starry lineup.

The iHeartRadio Music Festival returns to Las Vegas for its sixth iteration this fall, with two days of performances set for September 23 and 24 at T-Mobile Arena. Britney Spears, Drake, Ariana Grande, U2, Sting, Sam Hunt, twenty one pilots, Billy Idol, Florida Georgia Line, OneRepublic, Sia, Cage the Elephant, Zedd, Tears for Fears, Pitbull and Usher are among the iconic performers slated to take the stage.

WATCH: Kanye West Was Still Gunning for That 2020 Presidential Bid at Last Year's iHeartRadio Fest 

An announcement for the festival also promises "one-of-a-kind collaborations and surprise performances."

"After five years of producing some of the best lineups to ever take the stage, we're excited to unveil one of the strongest iHeartRadio Music Festival rosters to date," said Tom Poleman, President of National Programming at iHeartMedia. "This year's show is a complete cross section of the best artists from every genre of music. The weekend will be a true representation of the diversity of our iHeartRadio stations across the country as well as the music you find on the iHeartRadio app."

WATCH: Britney Spears Does a Sexy Dance Routine to Celebrate 'Make Me' Single Going No. 1 

Vegas darling Spears is back at the top of her game with her successful residency still going strong, a shiny new Millennium Award, and a No. 1 single. 

If you haven't heard the 34-year-old's catchy new song yet, listen below!