The 2017 American Music Awards are underway.

Bruno Mars, The Chainsmokers, Drake, and Ed Sheeran received several nominations each for the 2017 American Music Awards.

This year marks the 45th anniversary of the show that has brought fans the biggest musical superstars and most compelling live performances over the last four decades.

It’s hosted by black-ish star Tracee Ellis Ross, whose mother — music legend Diana Ross — is being honored with the American Music Music Award for Lifetime Achievement.

RELATED: See who’s performing at the 2017 AMAs

Here’s the full list of winners and nominees:

Favorite Duo or Group – Pop/Rock
WINNER: Imagine Dragons
The Chainsmokers

Artist of the Year
Bruno Mars
The Chainsmokers
Kendrick Lamar
Ed Sheeran

New Artist of the Year presented by T-Mobile
James Arthur
Niall Horan
Julia Michaels
Post Malone
Rae Sremmurd

Collaboration of the Year presented by Xfinity
The Chainsmokers featuring Halsey “Closer”
DJ Khaled featuring Justin Bieber, Quavo, Chance the Rapper and Lil Wayne “I’m the One”
Luis Fonsi and Daddy Yankee featuring Justin Bieber “Despacito”
Maroon 5 featuring Kendrick Lamar “Don’t Wanna Know”
The Weeknd featuring Daft Punk “Starboy”

Tour of the Year
Garth Brooks

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