The simple answer is yes! And my motto is "anything is possible". There are multiple ways to add the presence and history into the new design that create something incredibly remarkable. What I do recommend is making sure that the former owners are willing to let their cherished possession be altered, cut and used in this way. Next I would do the best job of having these garments professionally cleaned by a reputable dry cleaner who specialize in wedding gowns prior to the designers involvement with these garments. As special and beautiful as the sentiment of using these garments is, it is courteous to give them to the designer and staff in the best possible working condition ( and best smelling condition as well).
The conversation between yourself and designer is essential in the final outcome and final design of your gown. The only limitations to what can be is the current condition of materials of the older gowns and how much material there is. That said, a clever and talented designer will get the maximum usage or "most bang for your buck" from what they are given to work with. Keep in mind that there will be considerable time involved in carefully taking apart the gowns, to use the fabric and then the careful handling of the fabrics in cutting and assembling. This is not a simple or free endeavor - but the end result will be stunning and priceless!
