PHOTOS: Backstage At iHeartFestival

Niall Horan at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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P!nk & Ryan Seacrest at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Kylie Jenner at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Miley Cyrus at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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David Spade at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Miley Cyrus and Elvis Duran at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Miley Cyrus and Elvis Duran at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Thomas Rhett at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Thomas Rhett at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Kesha at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Kesha at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Macklemore and Elvis Duran at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Macklemore at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Kings of Leon at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Kings of Leon and Woody at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Kings of Leon at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Enrique Santos, Elvis Duran & David Guetta at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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David Guetta at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Demi Lovato and Craig Robinson at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Miley Cyrus at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Miley Cyrus at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Jared Leto, Ryan Seacrest and Rob Lowe at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Heidi Klum & Ryan Seacrest at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Thirty Seconds to Mars & Woody at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Thirty Seconds to Mars at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Jared Leto at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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P!nk at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Ryan Seacrest at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Ryan Seacrest at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Rob Lowe at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Harry Styles at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Elvis Duran and French Montana at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Harry Styles at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Harry Styles & Chris Stapleton at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Harry Styles & Chris Stapleton at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Niall Horan at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Niall Horan at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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P!nk at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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P!nk at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Ryan Seacrest at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Harry Styles & Ryan Seacrest at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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The Weeknd at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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The Weeknd at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Jared Leto at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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P!nk at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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DJ Khaled at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Corinna Kopf at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Elvis Duran at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Grand prize winner Jocelyn Kuleck & Elvis Duran at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Corinna Kopf with Bethany Watson & Kane at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Ryan Seacrest at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Elvis Duran and Kane at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Elvis Duran at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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All Time Low with Bethany Watson & Kane at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Hey Violet at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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PRETTYMUCH at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Johnjay Van Es and PRETTYMUCH at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Demi Lovato at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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P!nk at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Impractical Jokers at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Impractical Jokers at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Flume at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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P!nk & Ryan Seacrest at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Harry Styles at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Chris Stapleton at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Heidi Klum & Kelsea Ballerini at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Heidi Klum & Ryan Seacrest at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Elvis Duran and Danielle Monaro at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Heidi Klum, Elvis Duran & Danielle Monaro at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Travis Scott at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Heidi Klum at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Bebe Rexha at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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David Guetta & Enrique Santos at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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David Guetta at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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P!nk at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Ryan Seacrest at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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P!nk at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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DJ Khaled and Elvis Duran at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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DJ Khaled and Elvis Duran at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Heidi Klum & Ryan Seacrest at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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James Maslow & Danielle Monaro at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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James Maslow at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Niall Horan, Danielle Monaro & Elvis Duran at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Niall Horan at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Jared Leto at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Demi Lovato at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Perrie Edwards at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Little Mix at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Little Mix at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Harry Styles and Ryan Seacrest at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Harry Styles at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Johnjay Van Es and Little Mix at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Bebe Rexha at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Bebe Rexha, Danielle Monaro & Elvis Duran at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Shannon Leto and Jared Leto at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Thomas Rhett at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Thomas Rhett at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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French Montana at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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The Breakfast Club and French Montana at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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David Guetta & John Sykes at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Miley Cyrus at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Wayne Coyne at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Wayne Coyne at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Little Mix and Enrique Santos at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Alicia Silverstone at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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French Montana and PRETTYMUCH at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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James Van Der Beek at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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French Montana and Bebe Rexha at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Thirty Seconds to Mars at the iHeartRadio Music Festival at T-Mobile Arena on September 22, 2017 in Las Vegas, Nevada.

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Kesha at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Cheat Codes at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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LIGHTS at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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LIGHTS at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Thomas Rhett, Bobby Bones & Elvis Duran at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Thomas Rhett at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Thomas Rhett at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Cheat Codes at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Cheat Codes at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Cheat Codes at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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LIGHTS at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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In Real Life at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Acting Natural at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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In Real Life at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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In Real Life and Danielle Monaro at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Lili Reinhart, Casey Cott and Camila Mendes at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Lili Reinhart and Camila Mendes at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Julia Michaels at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Julia Michaels and Elvis Duran at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Julia Michaels at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Miley Cyrus at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Miley Cyrus at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Miley Cyrus at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Macklemore at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Macklemore and Elvis Duran at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Thomas Rhett, Tom Poleman and Bobby Bones at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Khalid at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Niall Horan at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Miley Cyrus at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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David Spade and Heidi Klum at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Miley Cyrus at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Taylor Lautner at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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DJ Khaled at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Danielle Monaro and Ryan Seacrest at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Ryan Seacrest and Elvis Duran at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Ryan Seacrest and Elvis Duran at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Big Sean at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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Johnjay Van Es and Macklemore at the iHeartRadio Music Festival at T-Mobile Arena on September 23, 2017 in Las Vegas, Nevada.

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