Esha might have something along those lines in one of he stores - DAZ or RDNA, not sure if she has content here. The dress, from what I can see, could be done with the Morphing Fantasy Dress but the veil/train is more distinctive - for a still you might be able to use one of the cloaks thata re around and instead of fitting it use a transparency map to hide the top, place it inside the figure's chest, and parent it..