Thora Birch as Vivian Petunia

Brittany Snow as Robin McDougal

Eddie Kaye Thomas as Michael Petunia

Christine Lahti as Felicia Petunia

Michael Urie as George McDougal

Tobias Segal as Charlie Petunia

David Rasche as Percy Petunia

Jimmy Heck as Adrian Petunia

Branca Ferrazo as Natassia

Kathy Searle as Lynn

Lion Shirdan as Russel

Meredith Holzman as Melinda

Cosondra Sjostrom as Bethany Bevins

Bolt Birch as Tony Thrust

Shad Gaspard as XL

Michael Emery as