Diane Keaton, birth name Diane Hall was born on 5 January 1946 in Los Angeles, California, USA. Diane Keaton studied Drama at Santa Ana College before dropping out to study at the Neighbourhood Playhouse in New York.

She got her first stage role in the Broadway rock musical "Hair". In year 1970, She was cased in play "Play It Again, Sam", which had a successful run.

In 1972, Diane Keaton played role as Kay in the Oscar-winning "The Godfather". In 1973, she appeared in "Sleeper". In 1974, she reprised that role in the film's first sequel, "The Godfather: Part II". In 1975, she appeared in "Love and Death".

In 1977, she played role in "Mr. Goodbar", which won her a Golden Globe nomination. Same year, she appeared in what many regard as her best performance, in the title role of Annie Hall. She won the Oscar and the British Award for Best Actress. She started a fashion trend with her unisex clothes and was the poster girl for a lot of young males.

In 1981, she played role of the bohemian female journalist Louise Bryant in film Reds. For her performance she received nominations for the Academy Award and the Golden Globe. For the rest of the 1980s she appeared infrequently in films, but won nominations in three of them. In 1984, she played the role of a confused, somewhat naive woman who becomes the tool of Middle Eastern terrorists in The Little Drummer Girl. In 1987, she directed the documentary Heaven, as well as some music videos. In 1990, she directed a television episode of the popular, but strange, "Twin Peaks".

In the 1990s, top actress Diane began to get more mature roles. In 1990, she played the role of 'Kay Corleone' in the third "Godfather" epic, The Godfather: Part III. In 1991, she appeared as the wife of Steve Martin in the hit Father of the Bride and again in Father of the Bride Part II in 1995. In 1993, she once again teamed with Woody Allen in Manhattan Murder Mystery, which was well received. In 1995 she received high marks for Unstrung Heroes, her first major feature as a director.