Sandahl Bergman was 27 in All That Jazz when she played the character 'Principal Dancer'.
That was over 44 years ago in 1979.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 72, and has starred in 31 movies in total, 30 of those since All That Jazz was released.
In All That Jazz, I think Sandahl Bergman looks: