Billboard Music Awards red carpet: Priyanka Chopra, Mila Kunis kill it

Priyanka Chopra attends the 2016 Billboard Music Awards

Priyanka wore a pretty blue gown.

Kristen Bell, Kathryn Hahn and Mila Kunis attend the 2016 Billboard Music Awards at T-Mobile Arena.

Britney Spears, recipient of the Millennium Award, poses in the press room during the 2016 Billboard Music Awards at T-Mobile Arena.

Kate Beckinsale

Ariana Grande

Rihanna

Demi Lovato

Jessica Alba

Wiz Khalifa, co-winner of the Top Hot 100 Song award for "See You Again" (with Charlie Puth), poses in the press room during the 2016 Billboard Music Awards.

Ashton Kutcher

Heidi Klum

Steven Tyler Pics: AFP/Getty