Justin Timberlake, Jack White, Mariah Carey Lead 2018 iHeartRadio Festival

Justin Timberlake, Jack White and Mariah Carey are among the artists that will perform at this year’s star-studded iHeartRadio Music Festival. Invision/AP/REX/Shutterstock; Amy Harris/Invision/AP/REX/Shutterstock; Gregory Pace/REX/Shutterstock

Justin Timberlake, Jack White, Carrie Underwood and Mariah Carey are among the artists that will perform at this year’s star-studded iHeartRadio Music Festival, which invades Las Vegas on September 21st and 22nd.

Sam Smith, Imagine Dragons, Shawn Mendes, Kelly Clarkson, Jason Aldean, Lynyrd Skynyrd, Rae Sremmurd, Panic! at the Disco, Luke Bryan, Kygo and Logic will also take part in the two-day festivities at Las Vegas’ T-Mobile Arena. Ryan Seacrest will once again host the festival, which promises “one-of-a-kind collaborations and…