2017 iHeartRadio Music Awards: Stars on the red carpet

Katy Perry attends the iHeartRadio Music Awards in Los Angeles on March 5, 2017.

RELATED: Celebs who had breakup makeovers

Ed Sheeran attends the iHeartRadio Music Awards in Los Angeles on March 5, 2017.

RELATED: 17 albums to expect in 2017

Heidi Klum attends the iHeartRadio Music Awards in Los Angeles on March 5, 2017.

RELATED: The celebs who inspired your favorite pop stars' biggest hits

Joe Jonas attends the iHeartRadio Music Awards in Los Angeles on March 5, 2017.

Christina Milian attends the iHeartRadio Music Awards in Los Angeles on March 5, 2017.

Jeremy Renner attends the iHeartRadio Music Awards in Los Angeles on March 5, 2017.

Shawn Mendes attends the iHeartRadio Music Awards in Los Angeles on March 5, 2017.

Kelsea Ballerini attends the iHeartRadio Music Awards in Los Angeles on March 5, 2017.

Jason Derulo attends the iHeartRadio Music Awards in Los Angeles on March 5, 2017.

Halsey attends the iHeartRadio Music Awards in Los Angeles on March 5, 2017.

Ryan Seacrest attends the iHeartRadio Music Awards in Los Angeles on March 5, 2017.

Kaerruche Tran attends the iHeartRadio Music Awards in Los Angeles on March 5, 2017.

Macklemore attends the iHeartRadio Music Awards in Los Angeles on March 5, 2017.

Jojo Fletcher attends the iHeartRadio Music Awards in Los Angeles on March 5, 2017.

Daya attends the iHeartRadio Music Awards in Los Angeles on March 5, 2017.

Billy Ray Cyrus attends the iHeartRadio Music Awards in Los Angeles on March 5, 2017.

Fifth Harmony attends the iHeartRadio Music Awards in Los Angeles on March 5, 2017.

Scheana Marie attends the iHeartRadio Music Awards in Los Angeles on March 5, 2017.

Maddie Ziegler attends the iHeartRadio Music Awards in Los Angeles on March 5, 2017.