I got the rough design from the original posted picture, which was a commission from some guy who went around to the artist tables at A-kon one year, to get victorian bondage dress designs. Some were posted on Deviant Art and that's where I was shown them.
http://kipestshin.deviantart.com/art/Victorian-Bondage-commission-67761797
http://demonsisera.deviantart.com/art/Victorian-Bondage-Commish-57910647
http://orasa.deviantart.com/art/Victorian-56972000
I dunno what the other dress design was inspired by, but it was made by another DA user who was making it as a wedding dress.
http://hentaidi.deviantart.com/gallery/
--Suichiro