Macklemore

Macklemore performs at MEO Arena on March 30, 2016 in Lisbon, Portugal. 

Pedro Gomes/Redferns

There won't be a dull moment at this year's star-studded iHeartRadio Music Festival in Las Vegas. As if superstar headliners like The Weeknd, Miley Cyrus and Coldplay wasn't enough for the the two-night event, iHeartMedia is tossing in some very special guests for the shows.

MacklemoreKhalid, Jack Antonoff and Bebe Rexha will be joining the festivities as special collaborators throughout the two nights on Sept. 22 and 23, Billboard can exclusively reveal Monday (Aug. 28). While it's unclear exactly when these four hitmakers will pop up, their additions certainly add to the excitement of an incredible weekend.

The iHeartRadio Music Festival will be held at Vegas' T-Mobile Arena and will be hosted by Ryan Seacrest. The full lineup (sans special guests) is: Coldplay, The Weeknd, DJ Khaled, Miley Cyrus, Lorde, Kings of Leon, Big Sean, Pink, Chris Stapleton, Thirty Seconds to Mars, Niall Horan, David Guetta, Thomas Rhett, Harry Styles, Kesha and Macy’s iHeartRadio Rising Star winner, James Maslow. There will also be a hoard of even more notable names at the Daytime Village presented by Capital One on Sept. 23, with the likes of Migos, Niall Horan, Little Mix and Noah Cyrus taking the stage before the second T-Mobile Arena show begins.

If you can't make it out to Vegas for the fest, it will be broadcast live on iHeartMedia radio stations in more than 150 markets, with the CW Network also live streaming both nights on CWTV.com and The CW App. In addition, the CW will have a two-night television special of the iHeartRadio Music Festival on Oct. 4 and Oct. 5 from 8 p.m. to 10 p.m. EST/PST.

If you are lucky enough to make it out to Vegas next month, get your festival tickets here and Daytime Village passes here

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