Anya Taylor-Joy was 16 in Vampire Academy when she played the character 'Feeder Girl (uncredited)'.
That was over 9 years ago in 2014.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 26, and has starred in 29 movies in total, 25 of those since Vampire Academy was released.
In Vampire Academy, I think Anya Taylor-Joy looks: