Olivia Kaufmann (s/b Cady Heron), Reneé Rapp (Regina George), Cailen Fu (s/b Gretchen Wieners), Kate Rockwell (Karen Smith), Barrett Wilbert Weed (Janis Sarkisian), Grey Henson (Damian Hubbard), Cameron Dallas (t/r Aaron Samuels), Cheech Manohar (Kevin Gnapoor), Catherine Brunell (Mrs. Heron/Ms. Norbury/Mrs. George), Curtis Holland (u/s Principal Duvall), Drew Redington (Mr. Heron), Teddy Toye (Coach Carr/Glen Coco/Math Moderator), Stephanie Lynn Bissonnette (Dawn Schweitzer), Collins Conley (Lizzie Therman/Caroline Krafft), Iain Young (u/s Tyler Kimble), Darius Barnes (Christian Wiggins), Pascal Pastrana (Shane Oman), Riza Takahashi (Sophie Kawachi), Devon Hadsell (Caitlyn Caussin), Aaron Alcaraz (s/w Jason Weems), Daryl Tofa (Marwan Jitla), Susie Carroll (s/w Taylor Wedell), Sasha Hollinger (Rachel Hamilton), Brittany Nicholas (s/w Grace Akinola), Gianna Yanelli (Sonja Acquino)