Park Si-yeon was 26 in The Fox Family when she played the character 'Older daughter fox'.
That was over 18 years ago in 2006.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 45, and has starred in 7 movies in total, 6 of those since The Fox Family was released.
In The Fox Family, I think Park Si-yeon looks: