Realistic, 8K, 26yo adult female, Caucasian, oval face, high zygomatic arches, straight nasal bridge, thin upper lip with a defined cupid's bow, plump lower lip, clear pale skin, hourglass body, slender waist, moderate mammary volume, wide iliac crests, voluminous copper-red hair styled in mid-century curls, wearing a mid-length black floral lace cocktail dress hiked up and bunched around her waist, a wide black satin waistband, white stretch-satin opera gloves, a single-strand pearl choker, sheer black 15-denier stockings, and black pointed-toe stiletto pumps. She is bent over a white studio plinth, legs spread wide, her right white-gloved hand buried deep to the wrist inside her gaping anal sphincter, knuckles pushing deep into the rectal canal, the anal introitus stretched to its limit and glistening with lubrication, her perineum bulging under the internal pressure of the fist. Her back is arched in a deep curve, face flushed, teeth gritting, eyes rolled back in a mix of intensity and ecstasy. Three-point studio lighting with a sharp rim light highlighting the tension in her muscles, 70mm lens, (low side-angle camera to expose the depth of penetration and the extreme stretch of the sphincter. 16:9)