Elongated labia
Overview
Elongated labia is an possibly genetic feature of certain Khoisan
Khoisan
Khoisan is a unifying name for two ethnic groups of Southern Africa, who share physical and putative linguistic characteristics distinct from the Bantu majority of the region. Culturally, the Khoisan are divided into the foraging San and the pastoral Khoi...

 groups, whose female members develop relatively elongated labia minora
Labia minora
The labia minora , also known as the inner labia, inner lips, or nymphae, are two flaps of skin on either side of the human vaginal opening, situated between the labia majora...

, hanging up to four inches outside their vulva
Vulva
The vulva consists of the external genital organs of the female mammal. This article deals with the vulva of the human being, although the structures are similar for other mammals....

 when they are standing in an upright position. The "apron" moniker was apparently gained from the tendency of early European descriptions to misidentify the pair of labia as a single, wide organ, which they called, in French, a tablier, or "apron".
 
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