My daughter is getting married September 28th. Her 3 bridesmaids did not want to buy their dresses in a bridal salon because of the cost. They decided on a retail store (Boston store) to get their dresses. My question is do they get their regular size or should they have their dresses fit larger and get a size bigger? They could go for alterations if needed. They did buy a long length. I'm sure the length on some or all dresses will be needing alterations.