That was over 6 years ago in 2015.
Today she is 30, and has starred in 30 movies in total, 14 since Z for Zachariah was released.
In Z for Zachariah, I think Margot Robbie looks:
Z for Zachariah scores 5.5 out of 10 on The Movie Database.
Margot Robbie's first acting role was as 'Cassandra' in Vigilante, released in 2008 when she was 18.