Kate Hudson as Liv

Anne Hathaway as Emma

Bryan Greenberg as Nate

Chris Pratt as Fletcher

Steve Howey as Daniel

Candice Bergen as Marion St. Claire

Kristen Johnston as Deb

Michael Arden as Kevin

Victor Slezak as Colson

Kelly Coffield Park as Kathy

John Pankow as John

Zoe O'Grady as Young Liv

Shannon Ferber as Young Emma

June Diane Raphael as Amanda

Emily Sarah Stikeman as Student #1

Robert Capron as Student #2

Kallie Tabor as Student #3

Bruce Altman as Simmons

Hettienne Park as Marissa

Lauren Bittner as Amie

Rena Maliszewski as Female Colleague

Casey Wilson as Stacy

Sarah Kate Jackson as Salesgirl

Jason Kolotouros as Delivery Guy

Paul Scheer as Ricky Coo

André Holland as DJ Jazzles

Anna Madigan as Tanorexic

Daniel Raymont as Colorist

Jon Daly as Head Set

Michael Anastasia as Geeky Neighbor

Nicole Stuart as Receptionist

Robert Scott Wilson as Rob

Pamela Figueiredo as Pamela

Sam Pannier as Stationery Clerk

John Franchi as New York Cabbie (uncredited)

William Brent as (voice)

Jeremy Brothers as Nerdy Colleague

Colin Ford as (voice)