How many movies have Cedric Gibbons and Frederika Brown collaborated on?

They have worked on 4 movies together! Their first movie together was These Glamour Girls (1939) while their highest rated movie together was Ninotchka (1939). They have not worked together since Two-Faced Woman (1941). They are most known for their comedy films together.

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Nightclub Guest (uncredited)
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Swana's Restaurant Patron (uncredited)
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Head Saleswoman (uncredited)
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Mrs. Wilston (uncredited)