Short straight skirt in stretch material. Visible front zip fastening, flat waistband with press stud tabs on the hips. Flat pleats on the front, plain colour.
This zipped skirt is exactly what you are looking for. It can be worn simply with a fitted t-shirt, thin tights and trainers along with a varsity jacket for a casual look. For a more rock look, team it up with a biker jacket and low square-heeled boots.