Katie Chang

Rebecca

Emma Watson

Nicki

Taissa Farmiga

Sam

Claire Julien

Chloe

Israel Broussard

Marc

Leslie Mann

Laurie

Georgia Rock

Emily

Carlos Miranda

Rob

Gavin Rossdale

Ricky

Stacy Edwards

Marc's Mom

G. Mac Brown

Henry

Marc Coppola

Mr. Hall - Marc's Dad

Janet Song

Rebecca's Mom

Annie Fitzgerald

Kate from Vanity Fair

Lorenzo Hunt

Police Officer #1 (Nicki's)

Timothy Starks

Police Officer #1 (Marc's)

Rich Ceraulo Ko

Police Officer #2 (Nicki's)

Joe Nieves

Police Officer (Rebecca's)

Nelson Rockford

Las Vegas Plainclothes Officer

Doug DeBeech

Adam

Erin Daniels

Shannon

Patricia Lentz

Judge

Michelle Alegria

Female TV Reporter #1

Stacey Turner

Female TV Reporter #2

Brian Gattas

Dogwalker

Logan Miller

Kid at Party

Marcia Ann Burrs

Grandma

Michael Yo

Male E-Interviewer

Halston Sage

School Girl

Marshall Bell

L.A. Detective #1

Brenda Koo

Sarah

Maika Monroe

Beach Girl

Isabel Lasker

Drunk Girl

Adea Lennox

Party Girl

Keenan Henson

Male TMZ Reporter

Rachelle Carson-Begley

Chloe's Mom

Peter Bigler

Chloe's Dad

Chad Brannon

Water Delivery Guy

Zoë Bleu Sidel

School Girl's Friend

Cari Champion

Female TV Reporter #3

Nina Siemaszko

Vegas Detective (Female)

Bailey Coppola

Wasted Boy

Yolanda Lloyd Delgado

Rob's Mom

Linc Hand

Police Officer Arresting Rob

Brett Goodkin

L.A. Detective #2

Paris Hilton

Paris Hilton

Kevin Spencer

Bedroom Police Officer #1

Sean Phillips

Bedroom Police Officer #2

Bobby Ashhurst

Police Officer #3

Karl Risinger

Police Officer #2 (Marc's)

Dale Champion

School Teacher

Kirsten Dunst

Kirsten Dunst (uncredited)