Joseph Gordon-Levitt
Tom
Zooey Deschanel
Summer
Geoffrey Arend
McKenzie
Chloë Grace Moretz
Rachel
Matthew Gray Gubler
Paul
Clark Gregg
Vance
Patricia Belcher
Millie
Rachel Boston
Alison
Minka Kelly
Autumn
Ian Reed Kesler
Douche
Darryl Alan Reed
Bus Driver
Valente Rodriguez
Employee #1
Yvette Nicole Brown
New Secretary
Nicole Vicius
Partygoer
Maile Flanagan
Rhoda
Darryl Sivad
Usher
Gregory A. Thompson
Minister
Richard McGonagle
Narrator (voice)
Jean-Paul Vignon
French Narrator (voice)
Bryan Anthony
Dancer
Sybil Azur
Dancer
Cheryl Baxter
Dancer
Gustavo Carr
Dancer
Nadine Ellis
Dancer
Alejandro Estornel
Dancer
Reshma Gajjar
Dancer
Tiffany Granath
Dancer
Jennifer Hamilton
Dancer
Brandon Henschel
Dancer
Kenneth Hughes
Dancer
Alexandra Nicole Hulme
Dancer
Jennifer Lee Keyes
Dancer
Rebecca Lin
Dancer
Gelsey Weiss
Dancer
Katie Malia
Dancer
Anthony Marciona
Dancer
Christopher Martinez
Dancer
Vivian Nixon
Dancer
Tracy Phillips
Dancer
Nathan Prevost
Dancer
Ryan Thomas
Dancer
Christian Vincent
Dancer
Jull Weber
Dancer
Olivia Howard Bagg
Summer - Age 12 (uncredited)
Chris Connell
Marcus (uncredited)
Samantha Krutzfeldt
Charlie (uncredited)
Kathryn Weisbeck
Summer Lookalike (uncredited)
Eileen Álvarez
Summer Lookalike (uncredited)
Jennifer Hetrick
Sarah (uncredited)
Pleasant Wayne
Tavern Patron (uncredited)
Charles Walker
Millie's New Husband
Natalie Boren
Another Partygoer
Michael Bodie
Man
John Mackie
Mime
Jacob Stroop
Cupid
Kevin Michael
Wedding Singer
Sid Wilner
Grossman
John R. Corella
Dancer
Nathaniel Flatt
Dancer
Michael Higgins
Dancer
John Jacquet Jr.
Dancer
Tim Lacatena
Dancer
Jamie Shea
Dancer
Adam Emery
Tom - Age 12 (uncredited)
Jason Robinson
The Puma (uncredited)
