I seem to be having the same problem. I can't find the mesh. When I tried this link:
http://www.sapphiresims2.com/showthread.php?t=27043 it just gave me a different recolour of the same mesh, not the mesh itself, which is what I despretly need, I am in awe of this dress!!!
Sorry, the mesh is gone. I don't know where to get it. I thought that link included the mesh with the recolor.