During the Mr. and Mrs. number José Ferrer was actually singing and dancing with his then-wife Rosemary Clooney, who was pregnant at the time.
Gene Kelly's dance partner in the "I Love to go Swimmin' with Wimmen" number is his younger brother, Fred Kelly.
The black-clad vamp in the "Artists and Models" sequence is an uncredited Julie Newmar, wearing the ornate 'spider's web' costume originally donned by Judy Landon as Olga Mara in the opening of Cantando na Chuva (1952).
The costumes in the "It" number were recycled from the "Beautiful Girls" number in Cantando na Chuva (1952). One female dancer is wearing Cyd Charisse's green flapper dress from the "Broadway Melody" Ballet.