So I had ordered a size six and it was bit too big. Much to my surprise. Then I ordered a size down and it arrived with a torn sleeve and a snag in the back, but it fit perfectly. Over the phone, several SA's very kindly tried to find another one for me, and then suggested I talk to alterations and find out how feasible altering the size six would be. When I got to the store, another size 4 had been found at a different store but it was also damaged. After talking to the very kind and helpful alterations people, I decided to return the size six and they will try to repair the other dress and seemed quite confident that they can, yay! So, I'll go pick it up on the 11th.