Other presenters include Prince Royce, Danica McKellar, Khloe Kardashian, Kylie Jenner, Lily Aldridge, Hannah Davis, Brett Eldredge, Florida Georgia Line, Pentatonix, Tracee Ellis Ross, Charli XCX, 50 Cent, Celine Dion, One Direction, Rita Ora, Ellen Pompeo and Molly Ringwald.
The Billboard Music Awards will be co-hosted by Ludacris and Chrissy Teigen and will air on ABC.
Taylor Swift, the most nominated performer of this year (with 14 Billboard nods), will premiere her "Bad Blood" music video at the show.
Performers include Kanye West, Mariah Carey, Van Halen, Britney Spears with Iggy Azalea, Nicki Minaj, Wiz Khalifa, Imagine Dragons and more.
Visit Billboard.com.