Day 1:
Bobby Bones, Amy Brown, Hey Violet, Rena Lovelis, Nia Lovelis, Casey Moreta, Iain Shipp, Ryan Seacrest, All Time Low, Alex Gaskarth, Jack Barakat, Zack Merrick, Rian Dawson, Corinna Kopf, Brian Quinn, James Murray, Joe Gatto, Kelsea Ballerini, Flume, Prettymuch, Austin Porter, Nick Mara, Brandon Arreaga, Edwin Honoret, Zion Kuwonu, Heidi Klum, Little Mix, Perrie Edwards, Jesy Nelson, Jade Thirlwall, Leigh Anne Pinnock, Big Boy, Ben Higgins (+) with Ashley Iaconetti, Wells Adams (+), Becca Tilley (+), Peter Kraus, Dean Unglert, Carolina Bermudez, Lulu and Lala aka Marissa Gonzalez with Marianela Gonzalez, 30 Seconds to Mars, Jared Leto, Shannon Leto, Tomo Milicevic, Vella Lovell, Scott Michael Foster, James Maslow, Bebe Rexha, David Guetta, French Montana, Rob Lowe with sons, Matthew Lowe, John Owen Lowe, James Van Der Beek with Kimberly Brook, The Weeknd,
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Day 2:
Kesha, Lights, Cheat Codes, Trevor Dahl, Matthew Russell, KEVI, Acting Natural, Eric Carnevale, James David Maney, Jesse Leonard, Lili Reinhart (+), Casey Cott (+), Camila Mendes (+), Ashleigh Murray, Niall Horan, Thomas Rhett, Alli Simpson, Jack Antonoff, Matt Barr, Christina Ochoa, Taylor Lautner, Julia Michaels, Keke Palmer, Miley Cyrus, Jeremy Ray Taylor, Wyatt Oleff, Sophia Lillis, Jaeden Martell, Jack Dylan Grazer, Chosen Jacobs, Khalid, Louis Tomlinson, DJ Khaled, Macklemore, Elvis Duran, Big Sean, Travis Scott,
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Performance:
Kesha, Macklemore, Miley Cyrus, Big Sean, DJ Khaled, Chance the Rapper, Quavo, French Montana, Demi Lovato, Pink (singer), Alecia Moore, Chris Stapleton with Morgane Stapleton, Harry Styles, Coldplay with Chris Martin (musician), 30 Seconds to Mars, Jared Leto, The Weeknd, Lorde, Khalid, Jack Antonoff, Thomas Rhett, Louis Tomlinson with Bebe Rexha, Niall Horan,
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Bebe Rexha, Kelsea Ballerini, Noah Cyrus, Halsey, Migos, Quavo, Offset, Takeoff, Little Mix, Jesy Nelson, Jade Thirlwall, Leigh Anne Pinnock,
