Charlotte Rampling was 17 in A Hard Day's Night when she played the character 'Girl at Disco'.
That was over 60 years ago in 1964.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 78, and has starred in 132 movies in total, 131 of those since A Hard Day's Night was released.
In A Hard Day's Night, I think Charlotte Rampling looks: