Mae Clarke was 40 in Singin' in the Rain when she played the character 'Hairdresser (uncredited)'.
That was over 72 years ago in 1952.
In 1992 she died aged 81, starring in 84 films in her career, 23 of those after Singin' in the Rain was first released. If she were alive today she would be 113.
In Singin' in the Rain, I think Mae Clarke looks: