Previously announced performers include BTS, Camila Cabello, Ariana Grande, Dua Lipa and Shawn Mendes, reports E! Online.
The event, to be hosted by Clarkson, will broadcast live from MGM Grand Garden Arena in Las Vegas on May 20.
Ed Sheeran, Bruno Mars, and Pulitzer Prize winner Kendrick Lamar are leading the nominations with 15 nods each. (ANI)