iHeartRadio Music Festival is back with in-person performances and big names! On Wednesday, iHeartRadio announced the line-up for the upcoming two-day festival, and revealed which super talented superstars are set to hit the stage.The festival's main-stage — at the T-Mobile Arena in Las Vegas — will showcase some big numbers from an eclectic swath of artists including Billie Eilish, Dua Lipa, Florida Georgia Line, Khalid, Lil Baby, Maroon 5, Nelly, and Sam Hunt.Additional acts hitting the main