Emma Stone was 19 in Ghosts of Girlfriends Past when she played the character 'Allison Vandermeersh'.
That was over 15 years ago in 2009.
Today she is 35, and has starred in 43 movies in total, 37 of those since Ghosts of Girlfriends Past was released.
In Ghosts of Girlfriends Past, I think Emma Stone looks: