Ryan Seacrest as Self - Host

Auliʻi Cravalho as Self

James Monroe Iglehart as Self

Donny Osmond as Self

Demi Lovato as Self

Ariana Grande as Self

Amber Riley as Self

Kristin Chenoweth as Self

Christina Aguilera as Self

Jordan Fisher as Self

Kenny Ortega as Self

Josh Groban as Self

Michael Bublé as Self

Beyoncé as Self

Derek Hough as Self

Hayley Erbert as Self

Julianne Hough as Self

Darren Criss as Self

John Stamos as Self

Josh Gad as Self

Luke Evans as Self

Alan Menken as Self

Erin Andrews as Self

Bobby Bones as Self

Carrie Ann Inaba as Self

Marcus Scribner as Self

Tori Kelly as Self

Thomas Rhett as Self

Olivia Rodrigo as Self

Joshua Bassett as Self

Ashley Tisdale 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