Jodelle Ferland was 4 in Mermaid when she played the character 'Desi'.
That was over 24 years ago in 2000.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 29, and has starred in 46 movies in total, 43 of those since Mermaid was released.
In Mermaid, I think Jodelle Ferland looks: