Megan Mullally was 22 in The Children Nobody Wanted when she played the character 'Sharon'.
That was over 42 years ago in 1981.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 65, and has starred in 51 movies in total, 46 of those since The Children Nobody Wanted was released.
In The Children Nobody Wanted, I think Megan Mullally looks: