Jonathan Bennett
- Aaron Samuels
- (archive footage)
Lizzy Caplan
- Janis Ian
- (archive footage)
Lacey Chabert
- Gretchen Wieners
- (archive footage)
Wai Choy
- Mathlete Tim Pak
- (archive footage)
Tina Fey
- Ms. Norbury
- (archive footage)
Neil Flynn
- Cady's Dad
- (archive footage)
Daniel Franzese
- Damian
- (archive footage)
Ana Gasteyer
- Cady's Mom
- (archive footage)
Lindsay Lohan
- Cady Heron
- (archive footage)
Rachel McAdams
- Regina George
- (archive footage)
Tim Meadows
- Mr. Duvall
- (archive footage)
Amy Poehler
- Mrs. George
- (archive footage)
Amanda Seyfried
- Karen Smith
- (archive footage)
Rajiv Surendra
- Kevin Gnapoor
- (archive footage)
