Fairuza Balk was 8 in The Best Christmas Pageant Ever when she played the character 'Beth Bradley'.
That was over 40 years ago in 1983.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 50, and has starred in 44 movies in total, 43 of those since The Best Christmas Pageant Ever was released.
In The Best Christmas Pageant Ever, I think Fairuza Balk looks: