By Much Request here's the base mesh to create a Corpse Bride Dress, Note that this doesn't have the proper movie texture, instead a simple black shaded fabric.
Hopefully with the help of others (i hate doing textures for the most part) we'll see a full corpse bride dress up in the next couple of months. Due to its style its best used in Standing Scenes, however it will work alright when sitting down. Note - This is more then just the dress, it includes modified mesh's for neck, arms, hands and legs to give them the stick-like appearance from the film.