You know those circle skirts where you fold some fabric in quarters and then slice the corner off, so the fabric looks like a doughnut? Is it possible to make a zip-free one of those out of a stiff material? I've seen a tutorial where you make a zip-free one by making a waistband out of stretchy fabric but the skirt is also stretchy fabric. Can I do the skirt from a stiff cotton and then put a stretchy waistband onto it? Thanks!