Yvonne De Carlo was 17 in I Look at You when she played the character 'Herself'.
That was over 83 years ago in 1941.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
In 2007 she died aged 84, starring in 102 films in her career, 100 of those after I Look at You was first released. If she were alive today she would be 101.
In I Look at You, I think Yvonne De Carlo looks: