A miniskirt (or mini-skirt, mini skirt, or mini) is a skirt with its hemline well above the knees, generally at mid-thigh level, normally no longer than 10 cm (4 in) below the buttocks; and a dress with such a hemline is called a minidress or a miniskirt dress. A micro-miniskirt or microskirt is a miniskirt with its hemline at the upper thigh, at or just below crotch or underwear level.
Short skirts had existed for a long time before entering mainstream fashion, though they were generally not called "mini" until they became a fashion trend in the 1960s. Instances of clothing resembling miniskirts have been identified by archaeologists and historians as far back as c. 1390–1370 BC. In the early 20th century, the banana skirt worn by the dancer Josephine Baker for her mid-1920s performances in the Folies Bergère was subsequently likened to a miniskirt. Extremely short skirts became a staple of 20th-century science fiction, particularly in 1940s pulp artwork, such as that by Earle K. Bergey, who depicted futuristic women in a "stereotyped combination" of metallic miniskirt, bra and boots.