Three nude women lying face down and stacked directly on top of each other, rear view, full-body vertical alignment, viewed from behind at ground level, thick thighs and buttocks of each woman clearly separated and visible, exposed vulvas between parted legs, natural skin texture, realistic anatomy. Bottom woman, heavyset with wide hips and thick thighs, large sagging buttocks and dense pubic hair. Middle woman, curvy and chubby, round soft cheeks and visible stretch marks. Top woman, slim and toned, perky rear, smooth skin, shaved pubic area. Warm soft lighting from behind casting deep shadows between their bodies, clean studio background, high detail, realistic skin tones, body-positive erotic composition, focus on layered curves and anatomical clarity from rear, (bodies clearly separated and layered:1.4), (thighs and hips stacked in vertical alignment:1.3)