A frilly skirt is a skirt that contains frills. Frills are trimmings created by tightly gathering or pleating fabric on one edge. A frilly skirt is the skirt equivalent of a frilly dress.
A pencil skirt is a slim-fitting skirt with a straight, narrow cut. Generally the hem falls to, or is just below, the knee and is tailored for a close fit. It is named for its shape: long and slim like a pencil. Pencil skirts are often worn together with a business suit or a blazer, sometimes with a matching waistcoat vest.
A pleated skirt is a skirt that contains pleats. Pleats are folds that are pre-defined with stitches and which can be both stylistic and functional. Common examples of specific skirt types with pleats include: school uniforms, tennis skirts, and kilts.
