Dave

Jason Lee

Acting

Ian

David Cross

Acting

Claire

Cameron Richardson

Acting

Gail

Jane Lynch

Acting

Alvin (voice)

Justin Long

Acting

Simon (voice)

Matthew Gray Gubler

Acting

Theodore (voice)

Jesse McCartney

Acting

Female Intern 1

Allison Karman

Acting

Female Intern 2

Tiara Parker

Acting

Female Intern 3

Kira Verrastro

Acting

Amy

Veronica Alicino

Acting

Mother in Store

Beth Riesgraf

Acting

Vet

Adriane Lenox

Acting

Engineer

Don Tiffany

Acting

Director

Lorne Green

Acting

Ted

Kevin Symons

Acting

Barry

Frank Maharajh

Acting

Photographer

Greg 'G-Spot' Siebel

Acting

Butler

Oliver Muirhead

Acting

Security Guard

Jayden Lund

Acting

Press Coordinator

Erin Chambers

Acting

Jillian Reynolds

Jillian Warry Barberie

Acting

DJ

Chris Classic

Acting

French Doll (voice)

Adam Riancho

Acting

Spanish Doll (voice)

Axel Alba

Acting

Choreographer

Rosero McCoy

Crew

Dancer

Alexis Boyd

Acting

Dancer

Criscilla Anderson

Acting

Dancer

Kevin Fisher

Acting

Dancer

Kyndra Reevey

Acting

Dancer

Tucker Barkley

Acting

Dancer

Celestina Aladekoba

Acting

Dancer

Laura Edwards

Acting

Dancer

Christopher Scott

Crew

Dancer

Miss Prissy

Acting

Dancer

Bryan Gaw

Acting

Dancer

Michelle Maniscalco

Acting

Dancer

Nick Drago

Acting

Dancer

Melanie Lewis

Acting

Poolside Girl (uncredited)

Natalie Cohen

Acting

Alvin (singing voice) (uncredited)

Ross Bagdasarian, Jr.

Acting

Theodore (singing voice) (uncredited)

Janice Karman

Acting

Band Member (uncredited)

Lisa Mason Lee

Acting

Alvin's Fan (uncredited)

Meghan Noone

Acting

Dancer (uncredited)

Chris Rossi

Writing

Band Roadie (uncredited)

Jameel Saleem

Writing

Dancing DJ (uncredited)

Melanie Stephens

Acting