Julie Andrews
- Queen Clarisse Renaldi
- (archive footage)
Gary Combs
- Lord Fricker
- (archive footage)
Hector Elizondo
- Joe
- (archive footage)
Caroline Goodall
- Mia's Mom, Helen
- (archive footage)
Elizabeth Gudenrath
- Cheerleader Anna
- (archive footage)
Anne Hathaway
- Mia Thermopolis
- (archive footage)
Tamara Levinson
- Cheerleader Lupe
- (archive footage)
Bianca Lopez
- Cheerleader Fontana
- (archive footage)
Todd Lowe
- Lana's Date Eric
- (archive footage)
Kathleen Marshall
- Charlotte Kutaway
- (archive footage)
Heather Matarazzo
- Lilly Moscovitz
- (archive footage)
Mandy Moore
- Lana Thomas
- (archive footage)
Sean O'Bryan
- Teacher Mr. O'Connell
- (archive footage)
Brian Phelps
- DJ Brian
- (archive footage)
Robert Schwartzman
- Michael Moscovitz
- (archive footage)
Sandra Taylor
- Suki Sanchez
- (archive footage)
Mark Thompson
- DJ Mark
- (archive footage)
