Another patternless skirt - this time with zipper and waistband. Side note: if you leave out the zipper, make the ties long enough to wrap around your waist and tie in front, and make the skirt ankle-length, you've got a great Ren Faire/SCA skirt that can go up or down a couple of sizes.
To make this style, you are going to make two layers of skirts. The wrap-around, outerskirt is one long rectangle with a curved corner at the base of each side and a ruffle attached all the way around the edge. The underskirt has stacked, horizontal ruffles that peek out when the outerskirt separates at the center front.