I want to make a skirt out of silk dupion. It's to sit on the waist, and be about 20 inches long, or so, so it finishes a couple of inches above my knee. I'm debating how to make it. I'd like it to be pretty voluminous, so I'm looking at doing a 3/4 circle skirt or a gathered skirt as per Gertie's tutorial here. Which would work better given the fabric? Should I use a lining, and if so, what?