Kellie Martin was 8 in The Canterville Ghost when she played an uncredited character.
That was over 39 years ago in 1985.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 48, and has starred in 56 movies in total, 55 of those since The Canterville Ghost was released.
In The Canterville Ghost, I think Kellie Martin looks: