Mischa Barton as Mary 'Mouse' Bedford

Piper Perabo as Pauline 'Paulie' Oster

Jessica Paré as Victoria 'Tori' Moller

Mimi Kuzyk as Eleanor Bannet

Emily VanCamp as Allison Moller

Amy Stewart as Cordelia

Caroline Dhavernas as Kara

Jackie Burroughs as Fay Vaughn

Grace Lynn Kung as Lauren

Lydia Zadel as Monica

Graham Greene as Joe Menzies

Luke Kirby as Jake Hollander

Alan Fawcett as Bruce Moller

Peter Oldring as Phil

Stephen Mwinga as John

Noel Burton as Morley Bradford

Gabrielle Boni as Allison's Friend

Sheena Bernett as Allison's Friend

Meaghan Rath as Allison's Friend

Melissa Pirrera as Allison's Friend

Jonathan Eliot as Tim Moller

Phong Doan Huy as Fencing Teacher

Catherine Florent as Paulie's Fencing Opponent

David Dean as Boy at R.A.B.

Sophie Barsanti as Flutist

Genevieve LaVallee as Flutist

Myrtho Ouellette as Flutist