Diane Keaton was a California native who studied Drama at Santa Ana College before dropping out to study at the Neighborhood Playhouse in New York. After appearing in summer stock for several months, she got her first major stage role in the Broadway rock musical "Hair". As understudy to the lead, she gained attention by not removing any of her clothing. In 1970, Woody Allen cast her in his Broadway play "Play It Again, Sam", which had a successful run. It was during this time that she became involved with Allen and appeared in a number of his films. The first one was Play It Again, Sam (1972), the screen adaptation of the stage play. That same year Francis Ford Coppola cast her as Kay in the Oscar-winning The Godfather (1972) and she was on her way to stardom. She reprised that role in the film's first sequel, The Godfather: Part II (1974). She then appeared with Allen again in Sleeper (1973) and Love and Death (1975).