Refers to the skirt of the fishtail. The waist, hips and middle thighs are combined, and the hem is gradually released downward to form a fishtail shape. The position where the fishtail begins to unfold and the size of unfolding depend on personal needs. In order to ensure the unity of "fish belly" and "fish tail", fishtail skirts usually adopt more than six structural forms, such as six fishtail skirts, eight fishtail skirts and twelve fishtail skirts.