Photos:: American Music Awards 2015 | Show highlights

Jennifer Lopez hosts the show at Microsoft Theater in Los Angeles.

Justin Bieber, left, performs.

Water plays a huge part in Justin Bieber’s AMA finale performance.

Justin Bieber at the American Music Awards.  (Kevin Winter / Getty Images)

Macklemore, left, and Leon Bridges perform a statement-riddled song.

Fall Out Boy accepts the Favorite Alternative Artist award.

Actor-singer Jared Leto speaks onstage as he introduces a performance by Celine Dion.

Celine Dion performs a song from Edith Piaf.

Actor Harrison Ford introduces a “Star Wars”-centric performance.

An orchestra performs a tribute to “Star Wars.”

Avi Kaplan, left, Kirstie Maldonado, Scott Hoying, Mitch Grassi, and Kevin Olusola of Pentatonix perform during a tribute to the theme song of “Star Wars.”

Avi Kaplan, Kirstie Maldonado, Scott Hoying, Mitch Grassi, and Kevin Olusola of Pentatonix perform, with Darth Vader watching over the quintet and the accompanying orchestra.

Alanis Morissette, left, and Demi Lovato perform Morissette’s “You Oughta Know.”

Luke Bryan and Karen Fairchild of Little Big Town perform.

LOS ANGELES, CA - NOVEMBER 22: Singer The Weeknd performs onstage during the 2015 American Music Awards at Microsoft Theater on November 22, 2015 in Los Angeles, California. (Photo by Kevin Winter/Getty Images) ** OUTS - ELSENT, FPG, CM - OUTS * NM, PH, VA if sourced by CT, LA or MoD **  (Kevin Winter / Getty Images)

Musicians Diplo, left, Skrillex and Justin Bieber accept Collaboration of the Year award for “Where Are U Now.”

Carrie Underwood accepts the award for Favorite Female Artist — Country.

Nicki Minaj accepts the award for Favorite Album — Rap/hip-hop for “The Pinkprint.”

Paula Abdul, center, and Donnie Wahlberg, right, present Ariana Grande with the award for Favorite Female artist — Pop/rock.

Singer Ariana Grande takes a moment to accept the Favorite Pop/Rock Female Artist award.

Singer Chris Martin, center, and musicians Jonny Buckland, left, Will Champion and Guy Berryman of Coldplay.

Ariana Grande thanks the fans as she accepts the Favorite Pop/Rock Female Artist award.

Chris Martin of Coldplay

The Weeknd and fire.

Singer Sam Hunt accepts New Artist of the Year award.

Nick Jonas performs a medley of his 2015 hits.

Nick Jonas performs his hit “Jealous.”

Gwen Stefani sings with emotion.

Gwen Stefani performs.

Niall Horan, left, Liam Payne, Harry Styles, Louis Tomlinson of One Direction perform.

Nicki Minaj presents the award for Favorite Duo or Group — Pop/rock.

Model Gigi Hadid, left, and TV personality Kylie Jenner walk onstage as presenters.

Hannah Davis, left, and Wiz Khalifa introduce a performance by 5 Seconds of Summer.

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

Actresses Hailee Steinfeld, left, Chrissie Fit, Rebel Wilson and Anna Kendrick accept Top Soundtrack award for “Pitch Perfect 2.”

Carrie Underwood performs.

Carrie Underwood belts out a tune.

Ariana Grande starts off singing solo.

Ariana Grande performs.

Selena Gomez performs with a cadre of male dancers onstage during the 2015 American Music Awards at Microsoft Theater on Nov. 22, 2015.

Actors Nick Robinson and Chloe Grace Moretz introduce a performance.

Singers Charlie Puth and Meghan Trainor perform the song “Let’s Marvin Gaye and Get it On.”

Singers Charlie Puth and Meghan Trainor kiss onstage, something they’ve done before.

Demi Lovato performs.

Demi Lovato and her backup dancers, perform.

Singers Niall Horan, left, Harry Styles, Louis Tomlinson and Liam Payne of One Direction accept the Favorite Pop/Rock Band/Duo/Group award.

Prince speaks onstage as he prepares to hand out the award for soul/R&B album.

The Weeknd accepts Favorite Soul/R&B Album for “Beauty Behind the Madness.”

Host Jennifer Lopez performs onstage during the opening.

Jennifer Lopez snuggles with a dancer.