Photos: iHeart Radio Music Awards 2015 | Show highlights

Host Jamie Foxx, left, and singer Nick Jonas speak at the 2015 iHeartRadio Music Awards at the Shrine Auditorium in Los Angeles.

Singer Justin Timberlake

Singer Nick Jonas performs.

Singer Kelly Clarkson performs “Heartbeat Song.”

Musicians Michael Clifford, left, Ashton Irwin, Calum Hood and Luke Hemmings of 5 Seconds of Summer present onstage.

Singer Nate Ruess performs.

“Jane the Virgin” actress Gina Rodriguez presents an award for best lyrics.

“Sharknado” actor Ian Ziering and a costumed shark from Katy Perry’s Super Bowl halftime show speak onstage.

Singer-songwriter Taylor Swift reacts to winning the best lyrics award for “Blank Space” as singer Justin Timberlake congratulates her.

Singer Meghan Trainor and her admiring dancers.

Actor Jeremy Piven speaks onstage.

Singer Jennifer Hudson and rapper Iggy Azalea perform.

Rapper-actor Ludacris

Brian Kelley, left, and Tyler Hubbard of Florida Georgia Line perform.

Tyler Hubbard of Florida Georgia Line performs as fans look for a touch.

Singer Justin Timberlake accepts the iHeartRadio Innovator Award.

“Empire” actress Taraji P. Henson introduces a performance by Rihanna.

A helicopter dominates the stage as Rihanna performs.

Rihanna performs with dancers.

Calum Hood, left, Michael Clifford, Ashton Irwin and Luke Hemmings of 5 Seconds of Summer accept the Best Fan Army award.

YG, center, and Jeremih accept the Hip Hop/R&B Song of the Year award for “Don’t Tell ‘Em.”

Jason Aldean performs.

Jason Aldean, left, accepts the Country Song of the Year award for “Burnin’ It Down” from singer Reba McEntire.

Madonna, left, and Taylor Swift perform “Ghost Town.”

Host Jamie Foxx performs.

Jamie Foxx, left, is joined onstage by singer Chris Brown.

Nate Ruess performs.

Taylor Swift, left, accepts the Song of the Year award for “Shake It Off” from Madonna.