Guh, I think I've actually seen information on that exact dress, but I can't remember where. ._.
It really depends on the specific
effect you want, for what you put under the skirt.
I believe that dress petticoats, not a hoop-skirt - however, you
might be better-served by a hoop-skirt, depending on the look you would like to achieve - it also might be easier and less expensive !
If you have a reference picture of what you want to make, specifically, that would be a big help !