Evanna Lynch was 14 in Harry Potter and the Order of the Phoenix when she played the character 'Luna Lovegood'.
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 32, and has starred in 15 movies in total, 12 of those since Harry Potter and the Order of the Phoenix was released.
In Harry Potter and the Order of the Phoenix, I think Evanna Lynch looks: