Joan Cusack was 16 in My Bodyguard when she played the character 'Shelley'.
That was over 44 years ago in 1980.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 61, and has starred in 70 movies in total, 68 of those since My Bodyguard was released.
In My Bodyguard, I think Joan Cusack looks: