This is my Prom dress that I designed. Nina and I made it in 1 week! What it takes to make a dress in 1 week: A lot of tea and a lot of Metric ;)
The bustier top was made with a heavy, silk ribbon sort of thing that my Nana bought from India. The bottom is black chiffon on the top and black silk underneath.
I wanted to make the back cut out, which was lucky because we ran out of that ribbon stuff anyway! It straps together with hooks and the bottom with an invisible zipper.