Greta Gerwig as Brooke Cardinas

Lola Kirke as Tracy Fishko

Matthew Shear as Tony

Jasmine Cephas Jones as Nicolette

Heather Lind as Mamie-Claire

Michael Chernus as Dylan

Cindy Cheung as Karen

Kathryn Erbe as Stevie

Dean Wareham as Harold

Shana Dowdeswell as Ruth

Shelby Rebecca Wong as Laura

Alfred Macadam as Professor #1

Amy Warren as Counselor

Sharon Washington as Professor #2

Morgan Lynch as Student

Andrea Chen as Hallway Girl

Shoba Narayan as Hallway Girl

Colin Stokes as Mobius Guy

Juliet Brett as Tiny Girl

Gretchen Young as Work Study Woman

David Longstreth as The Band

Amber Coffman as The Band

Steven Marion as The Band

Michael Daniel Johnson as The Band

Nat Baldwin as The Band

Rebecca Naomi Jones as Party Hostess

Mickey Sumner as Fake Brooke

Mary Beth Minthorn as Cycling Class Student

Clare Foley as Peggy

Rebecca Henderson as Anna Wheeler

Kareem Williams as Kareem

Frank Iacuzzo as Psychic

Jessie Austrian as Pregnant Book Club Member

Taryn Simon as Pregnant Book Club Member

Casey Leigh Atre as Pregnant Book Club Member

Andrea Teasdale as Pregnant Book Club Member

Marina Ayala as Housekeeper

Seth Barrish as Brooke's Dad (voice)

Amanda Gates-Ellison as Advisor

Charlie Gillette as Carey (uncredited)