Charlotte Sullivan was 11 in Harriet the Spy when she played the character 'Marion Hawthorne'.
That was over 28 years ago in 1996.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 40, and has starred in 23 movies in total, 22 of those since Harriet the Spy was released.
In Harriet the Spy, I think Charlotte Sullivan looks: