Emilie de Ravin was 19 in Carrie when she played the character 'Christine Hargenson'.
That was over 22 years ago in 2002.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 42, and has starred in 15 movies in total, 14 of those since Carrie was released.
In Carrie, I think Emilie de Ravin looks: