showgirl skirt
A skirt or dress that only covers the rear and sides, but leaves the front open. Usually worn with something like a leotard or swimsuit bottom.
If the skirt isn't stand alone, but used in conjunction over another skirt, shorts or pants, use the overskirt tag instead. Overskirt and showgirl skirt are mutually exclusive.
If the fabric also covers the front like a regular skirt, use high-low skirt instead.