Cast: Abigail Anderson, Alana Haim, Alanis Morissette, Alessia Cara, Alison Krauss, Ally Brooke, Amos Heller, Andreja Pejic, Andy Grammer, Austin Spacy, Avril Lavigne, Beck, Behati Prinsloo, Ben McKee, Brendan Champion, Camila Cabello, Candice Swanepoel, Cara Delevingne, Charli XCX, Chris Rock, Christian Henderson, Christian Owens, Ciara, Clare Turton Derrico, Dan Reynolds, Dane Laboyrie, Daniel “Z” Platzman, Danielle Haim, David Cook, Dierks Bentley, Dinah Jane, Dwyane Wade, Ed Sheeran, Eli Maiman, Eliotte Woodford, Ellen DeGeneres, Ellie Goulding, Este Haim, Fetty Wap, Gigi Hadid, Giuseppe Giofre, Graham Sierota, Hailee Steinfeld, Heidi Klum, Idina Menzel, Jade Thirlwall, Jaime King, Jake Kodish, James Mackay, Jamie Sierota, Jason Derulo, Jesy Nelson, Jimi Westbrook, Jimmy Garden, Joan Baez, John Legend, Julia Roberts, Justin Timberlake, Kamilah Marshall, Karen Fairchild, Karlie Kloss, Keith Urban, Kelsea Ballerini, Kendall Jenner, Kevin Ray, Kim Davidson, Kimberly Perry, Kimberly Schlapman, Kobe Bryant, Lauren Jauregui, Leigh-Anne Pinnock, Lena Dunham, Leona Lewis, Lily Aldridge, Lily Donaldson, Lisa Kudrow, Lorde, Maho Udo, Malcolm David Kelley, Mariska Hargitay, Mark Villaver, Martha Hunt, Mary J.