Bette Davis was 21 in The Bad Sister when she played the character 'Laura Madison'.
That was over 93 years ago in 1931.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
In 1989 she died aged 81, starring in 165 films in her career, 164 of those after The Bad Sister was first released. If she were alive today she would be 116.
In The Bad Sister, I think Bette Davis looks: