That was over 30 years ago in 1991.
Today she is 75, and has starred in 59 movies in total, 34 since Father of the Bride was released.
In Father of the Bride, I think Diane Keaton looks:
Father of the Bride scores 6.2 out of 10 on The Movie Database.
Diane Keaton's first acting role was as 'Joan Vecchio' in Lovers and Other Strangers, released in 1970 when she was 24.