The four-hour event will also feature celebrity DJ mixes from Joe Jonas, Diplo, Marshmello, will.i.am, Martin Garrix, Dillon Francis and more.
Presented by State Farm, the series will premiere on Wednesday (29 April).
Hosted by Los Angeles’ 102.7 KIIS FM, the event will include appearances by Ryan Seacrest, Lauv, Dillon Francis and many others.
The special featured performances from Billie Eilish, Shawn Mendes, Dave Grohl, Sam Smith and more, from their own homes.
Taylor Swift, Halsey, Lizzo, Luke Combs and Shawn Mendes are also among this year's nominees.
The star's fans are invited to gather round their devices on Thursday night, 9 January, the eve of 'Rare's official release.
The new clip features all women, including Cara Delevingne, Suki Waterhouse and Debbie Harry.
"'ME!' is a song about embracing your individuality and owning it," Swift says.
This year’s show will take place at Dignity Health Sports Park, formerly StubHub Center and home of the L.A. Chargers and the L.A. Galaxy, on Saturday, 1 June.
The ceremony which aired on Fox was hosted by rapper T-Pain and featured performances by Halsey, Garth Brooks and Kacey Musgraves, among others.
iHeartMedia also announced that Taylor Swift will receive the iHeartRadio tour of the year award for her Reputation Stadium Tour.
The iconic rapper last visited these shores back in March 2017 in support of his fourth album 'Views.'
Also leading the hip-hop noms is Post Malone, who snagged five nominations including Male Artist Of The Year and Hip-Hop Artist Of The Year, as well as Song Of The Year for...