Simonetta Stefanelli was 35 in The Godfather Part III when she played the character 'Apollonia Vitelli-Corleone'.
That was over 33 years ago in 1990.
Today she is 69, and has starred in 19 movies in total, 1 of those since The Godfather Part III was released.
In The Godfather Part III, I think Simonetta Stefanelli looks: