| Hayden Panettiere | .... | Britney Allen |
| Solange Knowles Smith | .... | Camille |
| Gus Carr | .... | Jesse |
| Marcy Rylan | .... | Winnie |
| Cindy Chiu | .... | Amber |
| Giovonnie Samuels | .... | Kirresha |
| Francia Almendarez | .... | Leti |
| Gary LeRoi Gray | .... | Tyson |
| Danielle Savre | .... | Brianna |
| Jessie Fife | .... | Sierra |
| Jake McDorman | .... | Brad Warner |
| JoJo | .... | DJ / Announcer |
| Deborah Sullivan | .... | PV Teacher |
| Eric Bruskotter | .... | Tim Allen |
| Kiersten Warren | .... | Pam Allen |
| Steven West | .... | Security Guard |
| Conni Marie Brazelton | .... | Mrs. Webster |
| Wilke Itzin | .... | Student Dj |
| Swin Cash | .... | Herself |
| Rihanna | .... | Herself |
| Teresa Strasser | .... | Local Reporter |
| Sean van der Wilt | .... | Pacific Vista Cheerleader |
| Blake Angiers | .... | Pacific Vista Cheerleader |
| Bowd Beal | .... | Pacific Vista Cheerleader |
| Casey Marlow | .... | Pacific Vista Cheerleader |
| Jordan Johnson | .... | Pacific Vista Cheerleader |
| Griffin Myers | .... | Pacific Vista Cheerleader |
| Whitney Lefler | .... | Pacific Vista Cheerleader |
| Caity Lotz | .... | Pacific Vista Cheerleader |
| Tarah Paige | .... | Pacific Vista Cheerleader |
| Michelle Jersey Maniscalco | .... | Pacific Vista Cheerleader |
| Shannon Stotz | .... | Pacific Vista Cheerleader |
| Betsey Lawrey | .... | Pacific Vista Cheerleader |
| Noreen Juliano | .... | Crenshaw Heights Cheerleader |
| Erin Yvonne | .... | Crenshaw Heights Cheerleader |
| Kevin Wilson | .... | Crenshaw Heights Cheerleader |
| Marty Dew | .... | Crenshaw Heights Cheerleader |
| Monica Soto | .... | Crenshaw Heights Cheerleader |
| Alexiss Sanchez | .... | Crenshaw Heights Cheerleader |
| Dominque Domingo | .... | Crenshaw Heights Cheerleader |
| Terrence Harrison | .... | Crenshaw Heights Cheerleader |
| Alex Kaye | .... | Crenshaw Heights Cheerleader |
| Sal Davila | .... | Crenshaw Heights Cheerleader |
| John Cronin | .... | Crenshaw Heights Cheerleader |
| Chester Jackson | .... | Crenshaw Heights Cheerleader |
| Jonathan Rios | .... | Crenshaw Heights Spotter |
| Shaun Thompson | .... | Crenshaw Heights Spotter |
| Trever Love | .... | Crenshaw Heights Spotter |
| Matthew Campbell | .... | Amber's Boyfriend |
| Shane Cibella | .... | Coach |
| Denise Emery | .... | Audition Cheerleader |
| Chad Moore | .... | Prom Date 2 |
| Josh Siemens | .... | Prom Goer |
| Audia | .... | Mime (uncredited) |
| Sandy Colton | .... | Audition Cheerleader (uncredited) |
| Tanya Douglas | .... | Dancer (uncredited) |
| Lindsey Evans | .... | Cheerleader (uncredited) |
| Tony Gonzalez | .... | Himself (uncredited) |
| Paul Haasch | .... | Prom Date (uncredited) |
| Danielle E. Hawkins | .... | Audition Cheerleader (uncredited) |
| Devon Marie King | .... | Student (uncredited) |
| Don Le | .... | Asian Student (uncredited) |
| Kimberly Magness | .... | White Girl Clique Leader (uncredited) |
| Heather Nichols | .... | Dancer (uncredited) |
| Jeran Pascascio | .... | Jock (uncredited) |
| Tia Robinson | .... | Dancer (uncredited) |
| Marquita Scott | .... | Crenshaw Heights Cheerleader (uncredited) |
| Debra Sullivan | .... | Teacher (uncredited) |
| Ivan 'Flipz' Velez | .... | Dancer (uncredited) |
| Shorty Welch | .... | Dancer (uncredited) |