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

Dua Lipa, Gwen Stefani, Halsey, The Weeknd, Paramore and more performed at the iHeartRadio Music Festival in Las Vegas over the weekend. See the best photos from the concert here

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,

Dua Lipa has brought vintage back on the red carpet. The singer pulled off a look out of the archives at the 2024 iHeartRadio Music Festival in Las Vegas. The all-black ensemble saw Lipa put a sparkly twist on her racy bralette.

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,