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Anita Loos was an American actress and screenwriter who was best known for her work on the screenplays for the films Gentlemen Prefer Blondes and Gentlemen Marry Brunettes. She was born in 1893 in New York City and began her career as an actress in the early 1910s. In the 1920s, she began writing screenplays and quickly became one of the most successful screenwriters in Hollywood.