Miley Cyrus was 10 in Big Fish when she played the character 'Ruthie - Age 8'.
That was over 20 years ago in 2003.
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 58 movies in total, 57 of those since Big Fish was released.
In Big Fish, I think Miley Cyrus looks: