Jennette McCurdy was 8 in Shadow Fury when she played the character 'Anna Markov'.
That was over 23 years ago in 2001.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 31, and has starred in 16 movies in total, 15 of those since Shadow Fury was released.
In Shadow Fury, I think Jennette McCurdy looks: