Site walks you through the process of altering a standard dress sloper to create this design. The process is very helpful in understanding how to go about altering patterns. But it's not in English
An interesting 'accordion' dress concept I saw on a Chinese dress site people might be interested in (link to dress in comments) : sewing. It would be interesting to not too a bunch of colors for the accordion part, but just one.
Prospere Gown: By Delphine Manivet Side pockets Back zip from high point shoulder (measurements taken from size Twil de coton, satin cuir coton Professionally clean Handmade in France
Praline & Caramel dress from Chotronette. It's as if someone joined Victorian aesthetic in a style with a dollop of whimsy. It looks as if it lit up from underneath!