I bought this dress in the Large. Unfortunately it is Too small around the Bodice where the buttons are. For a dress that is so flowy and beautifully loose, the Bodice near the buttons is WAYYYYY too tight. You don't seem to have a bigger size SO. WHAT DO I DO. I paid $64 US WHICH IS JUST OVER $ 88 Australian plus postage and it doesn't fit.
Perhaps you should think about putting some smocking around the Bodice Back as well as the straps.
Overall , I'm not happy and I've lost close to $100. Not happy because I love the over all style of the dress. Very disappointed.