The dress arrived this morning and it is lovely!
It is low cut, but it isn't a church wedding so that's not a problem. It is a beautiful shape and the material is lovely - soft and drapes really nicely.
There is stretch in the fabric which I would say explains the curvy model. I bought my normal size and it is a perfect fit. I absolutely love it. Quality is fantastic, and the colour is so beautiful. I will definately be buying more dresses from them.
I bought some lovely fushia accessories today for the outfit :) Thanks for your help everyone!