Wedding Gown

I have a friend who is getting married December 2005.
The theme is winter wonderland and the dresses we would like to have made would be replicas of the dresses worn in the closing act in the movies White Christmas starring Bing Crosby and Rosemary Clooney. The problem is I can`t find a pattern that is anywhere near like those dresses or any pictures of the dressed except from one angle. If anyone has
Any ideas please help.