Greta Gerwig

Brooke Cardinas

Lola Kirke

Tracy Fishko

Matthew Shear

Tony

Jasmine Cephas Jones

Nicolette

Heather Lind

Mamie-Claire

Michael Chernus

Dylan

Cindy Cheung

Karen

Kathryn Erbe

Stevie

Dean Wareham

Harold

Shana Dowdeswell

Ruth

Amy Warren

Counselor

Sharon Washington

Professor #2

Juliet Brett

Tiny Girl

David Longstreth

The Band

Rebecca Naomi Jones

Party Hostess

Mickey Sumner

Fake Brooke

Clare Foley

Peggy

Rebecca Henderson

Anna Wheeler

Seth Barrish

Brooke's Dad (voice)

Charlie Gillette

Carey (uncredited)