Billboard takes you inside the best moments backstage and in Vegas' T-Mobile Arena with Doja Cat, Shaboozey, Gwen Stefani, Victoria Monét & more stars.

Camila Cabello rocked two distinct looks at the iHeartRadio Music Festival, with a minimalistic red-carpet dress and heavy pop-punk on-stage outfit.

HeartRadio is kicking off the 2024 iHeartRadio Music Festival this Friday, September 20, 2024. The two-day music fest will occur at the Toshiba Plaza at T-Mobile Arena in Las Vegas, Nevada.

The iHeartRadio Festival came back with another star-studded line-up.

Backstage Camila Cabello and Gwen Stefani at day 1 of the iHeartRadio Music Festival held at T-Mobile Arena on September 20, 2024 in Las Vegas, Nevada. iHeartRadio Music Festival Day 1 – Red Carpet Kia Marie at day 1 of the iHeartRadio Music Festival held at T-Mobile Arena on September 20,

Gwen Stefani alone is a force to be reckoned with, but paired with Dua Lipa? She might just be unstoppable. Both singers performed on Friday, September 20, at the iHeartRadio Festival in Las Vegas, Nevada,

Gwen Stefani is praising Dua Lipa as the "prettiest girl in the world" after the duo recently posed together in a series of stunning selfies. Both Stefani and Dua performed during the first night of the 2024 iHeartRadio Music Festival presented by Capital One on Friday (September 20) night,

Check out photos of Big Sean, Camila Cabello, Doja Cat, Dua Lipa, Gwen Stefani, Halsey, Hozier, Keith Urban, and more at the 2024 iHeartRadio Music Festival hosted by Ryan Seacrest.