Elisha Cuthbert was 13 in Dancing on the Moon when she played the character 'Sarah'.
That was over 27 years ago in 1997.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 41, and has starred in 25 movies in total, 23 of those since Dancing on the Moon was released.
In Dancing on the Moon, I think Elisha Cuthbert looks: