Brittany Snow was 18 in The Pacifier when she played the character 'Zoe Plummer'.
That was over 18 years ago in 2005.
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 30 movies in total, 27 of those since The Pacifier was released.
In The Pacifier, I think Brittany Snow looks: