Caitlin Stasey was 18 in Spring Breakdown when she played the character 'Judy (uncredited)'.
That was over 14 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 32, and has starred in 16 movies in total, 15 of those since Spring Breakdown was released.
In Spring Breakdown, I think Caitlin Stasey looks: