Ciara, The Smashing Pumpkins, and Stella Lefty Join 2026 iHeartRadio Music Festival Lineup

The 2026 iHeartRadio Music Festival, presented by Capital One, has expanded its lineup with the addition of Ciara, The Smashing Pumpkins, and Stella Lefty. These artists will perform at the two-night event, scheduled for September 18 and 19 at T-Mobile Arena in Las Vegas, joining a diverse roster of previously announced acts.