Princess Polly, which I found out has a comprehensive online store of their clothes.
All clothes on the site are reasonably priced as well, what a bonus!
Taking Sun -$65
Hello Picasso - $70
Betty Dress $65 (you should see the cut out back!)Also a quick note, if you are in Sydney if you buy the clothing in person you will save a few dollars. I bought the Taking sun dress for $60