Kathleen Quinlan was 27 in Twilight Zone: The Movie when she played the character 'Helen Foley (segment "It's a Good Life")'.
That was over 41 years ago in 1983.
Today she is 69, and has starred in 74 movies in total, 56 of those since Twilight Zone: The Movie was released.
In Twilight Zone: The Movie, I think Kathleen Quinlan looks: