Ryan Seacrest as Self - Host

Auliʻi Cravalho as Self - Performer

James Monroe Iglehart as Self - Performer

Donny Osmond as Self

Demi Lovato as Self - Performer

Ariana Grande as Self - Performer

Amber Riley as Self - Performer

Kristin Chenoweth as Self

Christina Aguilera as Self - Performer

Jordan Fisher as Self - Performer

Kenny Ortega as Self

Josh Groban as Self - Performer

Michael Bublé as Self - Performer

Beyoncé as Self - Performer

Derek Hough as Self - Performer

Hayley Erbert Hough as Self - Performer

Julianne Hough as Self - Performer

Darren Criss as Self - Performer

John Stamos as Self - Performer

Josh Gad as Self - Performer

Luke Evans as Self - Performer

Alan Menken as Self - Performer

Erin Andrews as Self - Performer

Bobby Bones as Self - Performer

Carrie Ann Inaba as Self - Performer

Marcus Scribner as Self

Tori Kelly as Self - Performer

Thomas Rhett as Self - Performer

Olivia Rodrigo as Self

Joshua Bassett as Self

Ashley French as Self

Sofia Wylie as Self

Corbin Bleu as Self

Monique Coleman as Self

Lucas Grabeel as Self

Matt Cornett as Self

Frankie A. Rodriguez as Self

Zac Efron as Self

Julia Lester as Self

Dara Reneé as Self

Larry Saperstein as Self

Joe Serafini as Self

Kaycee Stroh as Self

Dove Cameron as Self

Booboo Stewart as Self

Heidi D'Amelio as Self

Marc D'Amelio as Self

Sarah Jeffery as Self

Amos Bocelli as Self - Talent Family

Elias Bublé as Self - Talent Family

Noah Bublé as Self - Talent Family

Vida Bublé as Self - Talent Family

Karelina Clarke as Self

Indiana Jewel Clarke as Self

Sofia Carson as Self

Anson Cronk as Self

Charli D'Amelio as Self

Dixie D'Amelio as Self

Orlando Dixon as Self - DCapella Member

Meg Donnelly as Self

Avery Drechsel as Self - Talent Family

Elle Fanning as Self

Montana Jacobowitz as Self

Jaden Joyner as Self

Morgan Keene as Self - DCapella Member

Kaelyn Kelly as Self - DCapella Member

Taylor Kelly as Self - DCapella Member

Kimberly Schlapman as Self - Performer

Karen Fairchild as Self - Performer

Jimi Westbrook as Self - Performer

Phillip Sweet as Self - Performer

Luisana Lopilato as Self - Talent Family

Milo Manheim as Self

Caitlin McHugh as Self

Eve Nelson as Self - Background Vocals

Thom Nemer as Self

Donny Osmond as Self - Performer

Cailyn Peddle as Self

Adilyn Phillips as Self - Talent Family

Ariana Phillips as Self - Talent Family

Raven-Symoné as Self

Tracee Ellis Ross as Self

Joe Santoni as Self - DCapella Member

Brody Schaffer as Self - Dancer

Marcus Scribner as Self - Performer

ChaCha Shen as Self - Dancer

Future Zahir Wilburn as Self - Talent Family

Sienna Wilson as Self - Talent Family

RJ Woessner as Self - DCapella Member