2018 iHeartRadio Music Festival: Mariah Carey, Justin Timberlake, Carrie Underwood, Jack White among performers
iHeartRadio/YouTube

The star-studded iHeartRadioMusic Festival has announced its lineup of performers for the eighth annual event, which takes place Sept. 21-22 at T-Mobile Arena in Las Vegas.Jason Aldean, Mariah Carey, Panic! At The Disco, KygoRae Sremmurd, Sam Smith and Jack White will perform on Sept. 21. Luke Bryan, Kelly Clarkson, Imagine Dragons, Logic, Lynyrd Skynyrd, Shawn Mendes, Justin Timberlake and Carrie Underwood will perform on Sept. 22.

A separate Daytime Stage at the iHeartRadio Music Festival will take place at the Las Vegas Festival Grounds on Sept. 22. Artists scheduled to perform on the Daytime Stage include 5 Seconds of Summer, Dua Lipa, Lil Uzi Vert, Logic, Dustin LynchBobby Bones and the Raging Idiots, Bazzi, Belly and Greta Van Fleet.

Although many of these artists have performed at the festival before, there are several who will be performing at the iHeartRadio Music Festival for the first time: Carey, White, Bryan, Imagine Dragons, Kygo, Rae Sremmurd, Lynyrd Skynyrd and most of the Daytime Stage artists. Former "American Idol" winners Clarkson and Underwood have not performed at the festival since its inaugural year in 2011. Other second-time iHeart Radio Music Festival performers include Aldean (who previously performed in 2012), Timberlake (in 2013), 5 Seconds of Summer (in 2014), Smith and Mendes (in 2015) and Panic! At the Disco (in 2016).

Beginning June 12 at 10 a.m. PT, Capital One cardholders will be able to buy pre-sale tickets, as well as a Premier Access Package that includes access to a front-row fan pit at the main stage on Sept. 22, a backstage tour, a Daytime Stage ticket and an exclusive artist experience. Tickets go on sale to the general public on June 15 at 10 a.m. PT.

Ryan Seacrest is hosting the festival, which will be broadcast on iHeartMedia radio stations in more than 150 markets in the United States. The CW network will have an exclusive livestream of the event on CWTV.com and The CW App. Highlights from the festival will be broadcast in a two-part TV special that The CW will air on October 7-8 at 8 p.m. ET/PT.