Arden Cho was 19 in The Break-Up when she played the character 'VIP Party Guest (uncredited)'.
That was over 17 years ago in 2006.
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 10 movies in total, 8 of those since The Break-Up was released.
In The Break-Up, I think Arden Cho looks: