Danielle Catanzariti as Esther Blueburger

Keisha Castle-Hughes as Sunni

Toni Collette as Mary

Christian Byers as Jacob Blueburger

Essie Davis as Grace Blueburger

Russell Dykstra as Osmond Blueburger

Jonny Pasvolsky as Mr. Hooper

Cassandra Jinman as The Slug

Yen Yen Stender as Ribbon 2 / Lissy

Talia Monaghan as Ribbon 1 / Missy

Laura Kettle as Ribbon 3 / Demi

Lucy Carey as Ribbon 4 / Sienna

Tisha Adey as Ribbon 5 / Prudence

Leticia Monaghan as Prefect / Cynthia

Edwin Hodgeman as Rabbi

Russell Dykstra as Music Teacher

Vanessa Downing as Music Teacher

Poh Ling Yeow as Sales Assistant

Bridget Walters as Mrs Rosen

Esme Proudman as Mrs. Silverman

Deidre Rubenstein as Mrs. Fleisher

Tony Mack as Science Teacher

Elise Champion as Helen

Nikita Adams as Piper

Daniela Ganter as Alex

Alex DeGaris-Boot as Braces Boy

Mark Gaweda as Psychiatrist

Paul Blackwell as Mr. Duke

Lyn Pike as Sunii's Grandmother

Joey Kennedy as Policewoman

Caitlin McDougall as Miss Koolkats

Patrick Frost as Sunni's Grandfather