Cécile, Annette, Yvonne, Émilie and Marie, the Dionne Quintuplets, turn five years old and have a private birthday party in their garden. Other than the five little French-Canadian princesses-of-the-world, the attendees at the party for the sheltered sisters are their doctor-and-mentor Roy Dafoe; a priest and two nurses; radio's "Town Crier" Alexander Woollcott; and RKO-Newsreel cameraman Harry Smith.
Alexander Woollcott
as Commentator
Yvonne Dionne
as Herself, a Dionne Quintuplet
Annette Dionne
as Herself, a Dionne Quintuplet
Cécile Dionne
as Herself, a Dionne Quintuplet
Émilie Dionne
as Herself, a Dionne Quintuplet
Marie Dionne
as Herself, a Dionne Quintuplet
Allan Roy Dafoe
as Himself, the Dionne Quintuplets' Doctor