Sandra Milo
as Suzy/Iris/Fanny
Valentina Cortese
as Valentina
José Luis de Vilallonga
as Giorgio's friend
Giulietta Masina
as Giulietta Boldrini
Sylva Koscina
as Sylva
Mario Pisu
as Giorgio (Giulietta's husband)
Alba Cancellieri
as Giulietta as a child
Caterina Boratto
as Giulietta's mother
Luisa Della Noce
as Adele
Sabrina Gigli
as Granddaughter (uncredited)
Rosella De Sepio
as Granddaughter (uncredited)
Lou Gilbert
as Grandfather
Silvana Jachino
as Dolores
Elena Fondra
as Elena
Cesarino Miceli Picardi
as Friend of Giorgio
Milena Vucotich
as Elisabeta (the maid)
Elisabetta Gray
as Giulietta's maid
Alessandra Mannoukine
as Susy's mother (uncredited)
Gilberto Galvan
as Susy's chauffeur (uncredited)
Yvonne Casadei
as Susy's maid
Hildegarde Golez
as Susy's maid (uncredited)
Edoardo Torricella
as Russian teacher (uncredited)
Dany Paris
as Desperate friend
Raffaele Guida
as Arabian prince (uncredited)
Fred Williams
as Lynx-Eyes' agent
Alberto Plebani
as Lynx-Eyes
Federico Valli
as Lynx-Eyes' agent
Seyna Seyn
as Masseuse (uncredited)
Dina De Santis
as Susy's maid (uncredited)