Marie Avgeropoulos was 21 in Sorority Wars when she played the character 'Missy'.
That was over 15 years ago in 2009.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 37, and has starred in 18 movies in total, 14 of those since Sorority Wars was released.
In Sorority Wars, I think Marie Avgeropoulos looks: