How many movies have Edith Head and Marion Ross collaborated on?

They have worked on 6 movies together! Their first movie together was Forever Female (1953) while their highest rated movie together was Sabrina (1954). They have not worked together since Colossus: The Forbin Project (1970).

Crew
Costume Design
Role
Joan Myers (uncredited)
Crew
Costume Supervisor
Role
Spiller's Girlfriend (uncredited)
Crew
Costume Design
Role
Miss Morris (uncredited)