A leather skirt is a skirt made of leather. Although durable material, the particular combination of style and material makes for a certain fashion statement. Leather skirts appear in a variety of lengths and styles.
A short leather skirt might be regarded as more sexy than an equivalent short skirt of other material, and thus as more suitable to a night out than as office wear. A long leather skirt might look professional and chic without looking too sexy for the office.