Nicki Minaj, Avril Lavigne, Halsey, and Lionel Richie are among the talent set to take the stage during the two-day event in September.Lavigne, Black Eyed Peas, Halsey, Richie, LL Cool J feat. DJ Z-Trip, Luke Combs, Maren Morris, Megan Thee Stallion, Morgan Wallen, Minaj, Pat Benatar & Neil Giraldo, Sam Smith, and The Black Keys will perform on the main stage at The T-Mobile Arena in Las Vegas on Sept.