Janet Jones was 20 in Grease 2 when she played the character 'Girl Goosed in Class (uncredited)'.
That was over 42 years ago in 1982.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 63, and has starred in 16 movies in total, 14 of those since Grease 2 was released.
In Grease 2, I think Janet Jones looks: