ET can confirm that the fifth-annual event will include performances by the "Perfect" singer, Cardi B, Maroon 5, Camila Cabello, Charlie Puth and the Backstreet Boys.
Nominees for the iHeartRadio Music Awards were announced in early January, with Cabello, Cardi B, Sheeran, Rihanna, Taylor Swift, Bruno Mars, Luis Fonsi, Daddy Yankee, Justin Bieber, DJ Khaled and Demi Lovato receiving multiple nominations.
However, fans still have a chance to vote for this year’s Best Fan Army, presented by Taco Bell, which includes awards for Best Lyrics, Best Cover Song, Best Music Video, the Social Star Award, Best Solo Breakout and the first-ever Cutest Musician’s Pet, Best Boy Band and Best Remix awards. Voting ends on March 4.
Then, during the awards show, fans can also vote on social media for winners of the Best Performance and Best Dressed awards, which will be announced immediately after the event.
The iHeartRadio Music Awards will be hosted by Hailey Baldwin and DJ Khaled and will take place at the Forum in Los Angeles on Sunday, March 11. Those at home can watch the big event on TBS, TNT and truTV at 8 p.m. ET.
In the meantime, here's a look at some of the best moments from this year's GRAMMYs: