Saoirse Ronan was 12 in I Could Never Be Your Woman when she played the character 'Izzie Mensforth'.
That was over 17 years ago in 2007.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 30, and has starred in 34 movies in total, 30 of those since I Could Never Be Your Woman was released.
In I Could Never Be Your Woman, I think Saoirse Ronan looks: