American screenwriter, playwright, author, actress, and television producer
Source (Wikipedia): Anita Loos

Corinne Anita Loos was an American actress, novelist, playwright and screenwriter. In 1912, she became the first female staff screenwriter in Hollywood, when D. W. Griffith put her on the payroll at Triangle Film Corporation. She is best known for her 1925 comic novel, Gentlemen Prefer Blondes, her screenplay of the 1939 adaptation of The Women, and her 1951 Broadway adaptation of Colette’s novella Gigi.