Betty Grable (December 18, 1916 – July 2, 1973) was an American actress, pin-up girl, dancer, model, and singer. Grable was enrolled in Clark's Dancing School at the age of three. At age 13, Grable and her mother set out for Hollywood with the hopes of stardom. There she landed several minor parts in films such as Whoopee!, New Movietone Follies of 1930, Happy Days and Let's Go Places. In 1932, she signed with RKO Radio Pictures. The bit parts continued for the next three years until Grable was cast in By Your Leave. One of her big roles was…