Katie McGrath was 22 in Pebble when she played the character 'Tara'.
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 40, and has starred in 11 movies in total, 10 of those since Pebble was released.
In Pebble, I think Katie McGrath looks: