Claudine Auger was 16 in Christine when she played the character 'Dancer (uncredited)'.
That was over 65 years ago in 1958.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
In 2019 she died aged 78, starring in 54 films in her career, 54 of those after Christine was first released. If she were alive today she would be 83.
In Christine, I think Claudine Auger looks: