Colin Farrell

(David)

Margot Robbie

(Sarah)

Jennifer Grant

(David's Mother)

Hamish Linklater

(David's Father)

Phoebe Waller-Bridge

(Female Cashier)

Kevin Kline

(The Mechanic)

Jodie Turner-Smith

(GPS (voice))

Lily Rabe

(Sarah's Mother)

Billy Magnussen

(The Man)

Chloe East

(Cheryl)

Sarah Gadon

(The Woman)

Brandon Perea

(Mike)

Calahan Skogman

(Sarah's Groomsman)

Jacqueline Novak

(Stacy Dunn)

Michelle Mao

(Smitty)

Jason Kravits

(Mr. Nelson)

Shelby Simmons

(Stage Manager)

Simon Khan

(Tate Chandler)

Mike Meldman

(Father of the Bride)

Pablo Soriano

(Vincent)

Galen Hooks

(Choreographer)

Brooke Maroon

(Amy Moore)

Julian Zane

(Eddie Bora)

Liz Jenkins

(Another Mother)

Gabriella Surodjawan

(Miss Jones)

Joyce Guy

(Doctor Vernon)

Danielle Kennedy

(Old Woman (uncredited))

Bernadette Balagtas

(Nan (uncredited))

Thomas Spaeter

(Concert Guest (uncredited))

Michael Sullivan

(Parent (uncredited))