Do they make the dresses or order them from the manufacturer, I know alot of these online places will make them to your measurements, maybe try emailing them with your issue, after all they will prolly do what they can to keep you happy and get your custom iukwim.

otherwise ring a dress maker and ask them if it is infact in the to hard basket to take in a rouched dress ( unless you of course are experianced in that area ) me I have no idea of taking things in or all that sort of thing so I would have to get advice.

good luck I hope you can get it, nothing better than wearing something you absolutely love and feeling like a hot mumma in it LOL

and yup I love those knickers too a gals best bud I say hehehe