Aubrey Shea as Jerrica Benton / Jem

Stefanie Scott as Kimber Benton

Hayley Kiyoko as Aja

Aurora Perrineau as Shana

Ryan Guzman as Rio Raymond

Molly Ringwald as Aunt Bailey

Juliette Lewis as Erica Raymond

Isabella Kai as Young Jerrica

Barnaby Carpenter as Emmett Benton

Jason Kennedy as Jason Kennedy

Nathan Moore as Zipper

Justin Alastair as Esteban

Mischke Butler as Vocal Coach

Samantha Newark as Hairstylist

Christopher Scott as Choreographer

Marcei A. Brubaker Brown as Homeless Woman

Jackie Tohn as Rebecca

Ken Baker as Donnie the Reporter

Britta Phillips as Stage Manager

Phillip Chbeeb as Back-Up Dancer

Nicholas Stewart as Back-Up Dancer

Kelsey Landers as Back-Up Dancer

Jessica Lee Keller as Back-up Dancer

Ryan Hansen as Stephen the Guard

Quddus as VJ

Christy Marx as Lindsey Pierce

Hana Mae Lee as Roxy

Katie Findlay as Stormer

Eiza González as Jetta

Kesha as Pizzazz

Alicia Keys as Alicia Keys

Chris Pratt as Chris Pratt

Dwayne Johnson as Dwayne Johnson

Jimmy Fallon as Jimmy Fallon

Nicholas Braun as Brad (uncredited)