A microskirt or micro-miniskirt is a very short skirt, being shorter than a miniskirt, being less than 8 inches (20 cm) in length. The microskirt is sometimes humorously referred to as a beltskirt and is described as more an evocation of the idea of a skirt than something that covers anything substantial.

At that length, if the wearer has bare legs, the microskirt exposes the thighs and the lower portion of the buttocks, as well as part of the undergarment(s), with even more being exposed if the wearer bends down. To avoid exposure of buttocks and undergarment(s), a microskirt may be worn with tights, leggings, shorts or bloomers. Stretch microskirts may be made using spandex material which may be worn in conjunction with hold-ups and a pair of stiletto heel pumps, and sometimes with G-string underwear.