Harriet Tidball reports on the skirt-designing system of Esther Hudson, a Santa Rosa, California weaver and teacher. Skirts are woven on a fine four-harness twill warp, with all color design done through weft stripes. The article covers choosing warp and weft colors from a color wheel, proportioning stripes with a Fibonacci-type Summation Curve, three stripe arrangement types and how to match them to the wearer, and treadling for color effects. It ends with warp specifications and a worked example skirt plan with a stripe diagram.