April 4, 2016 4:11PM ET

iHeartRadio Music Awards 2016: See Backstage Photos

Taylor Swift, Fetty Wap and more celebrated big wins, performances at ceremony

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The 2016 iHeartRadio Music Awards took over the Forum in Los Angeles on Sunday night. Hosted by Jason Derulo, the show saw performances from Zayn Malik, Fetty Wap and more, as well as big wins for Taylor Swift and Twenty One Pilots. Take a look at behind-the-scenes shots from the show.

INGLEWOOD, CALIFORNIA - APRIL 03: (EDITORS NOTE: Image was shot in black and white. A color version is not available.) Recording artists Justin Beiber (L) and Big Sean backstage at the iHeartRadio Music Awards at The Forum on April 3, 2016 in Inglewood, California. (Photo by Charley Gallay/Getty Images for iHeartRadio / Turner)

Charley Galley/Getty

Justin Bieber and Big Sean convened backstage at the show just a week after the rapper joined the singer at his Los Angeles show to perform their most recent collaboration, "No Pressure."

Joseph Llanes

Wiz Khalifa was nominated for three awards at the Sunday ceremony for his collaboration with Charlie Puth, "See You Again."

INGLEWOOD, CALIFORNIA - APRIL 03: (L-R) Recording artists Bono, Pharrell Williams, and The Edge backstage at the iHeartRadio Music Awards which broadcasted live on TBS, TNT, AND TRUTV from The Forum on April 3, 20 (Photo by Frazer Harrison/Getty Images for iHeartRadio / Turner)

Frazer Harrison/Getty

U2's career and activism were honored with the Innovator Award.

Joseph Llanes

The "Trap Queen" rapper performed his single "Again" on the iHeartRadio stage.

Joseph Llanes

The singer and actor appeared on the show to present the Best Tour award to Taylor Swift.

Kevin Mazur/Getty

The pop stars and best friends celebrated their wins together.

Joseph Llanes

Fall Out Boy were nominated for Best Duo/Group of the Year.

INGLEWOOD, CALIFORNIA - APRIL 03: (EDITORS NOTE: Image was shot in black and white. A color version is not available.) (L-R) Recording artists Joe Jonas, Cole Whittle, Nile Rodgers, JinJoo Lee and Jack Lawless backstage at the iHeartRadio Music Awards at The Forum on April 3, 2016 in Inglewood, California. (Photo by Charley Gallay/Getty Images for iHeartRadio / Turner)

Charley Galley/Getty

The Chic guitarist joined the burgeoning funk-pop band to mash-up "Cake by the Ocean" with "Le Freak."