Laura San Giacomo was 25 in Sex, Lies, and Videotape when she played the character 'Cynthia Bishop'.
That was over 35 years ago in 1989.
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 28 movies in total, 27 of those since Sex, Lies, and Videotape was released.
In Sex, Lies, and Videotape, I think Laura San Giacomo looks: