I am going by their chart. I know it has the give in the back. It would fit 9/10 fine, the bust I am not sure. I will get the tape out and let you know what it shows tomm.
Here is what I found out, It is hard to get the right inchs, due to the give in the back, I got 28in around, I know that can't be right. I went through some of their stuff and what they claim is a large is 34D / 36C. I put a C cup inside and it fits fine, no showing. The dress itself is 26in from top to bottom. Now My child says their charting is off, because what they claim she should be wearing is way to big. Which was the case in this dress.