Pencil skirts are so named because they have a way of making women's legs pencil thin and keep them close together by having a straight and narrow cut. They are separate pieces from blouses so you will need to find an upper part of the outfit to go with them.
These
types of skirts are appropriate for casual dates, girl's nights out, and
generally having a night on the town. They may be appropriate for work if it
follows your company's dress code but many of these skirts will be too short
for the workplace.