Myself as Heloise de Villefort from Gankutsuou
(and my wifey as Mercedes)
I made the costume myself using quilting cotton so I could have a pattern, with green lace draped over it and a hoop skirt with another pattern attached as a ruffle on the bottom. The top is a metallic brown/gold fabric with matching lace and green fabric at the edges.
This cosplay is actually a couple years old and I’m not too wild about my wig choices, but I still have the dress and occasionally wear it to ren fest without the jacket and the wig as a fancy almost Victorian style pirate.