Photorealistic nude figure study in a bathroom, vertical 2:3, 35mm, soft warm vanity light, slight steam.
The girl: petite 18-year-old, tiny waist, slim limbs, but very large full heavy natural breasts — both breasts completely unobstructed and lit, hanging with natural weight, visible underboob shadow, clear areola placement, pale skin with faint freckles, dark hair in a tight bun so nothing falls over her chest. Fully nude. Body turned three-quarters toward camera so the whole torso is open to the lens. One hand holds a toothbrush in her mouth with foam at her lips, elbow raised but out to the side, other hand flat on the sink edge, hip cocked, weight on the back leg.
The boy: lean naked man in his early twenties, standing leaned on the doorframe of the washing area a few steps back, arms folded, easy smirk, one long soft penis hanging straight down clearly visible.
Anatomy lock: exactly two arms, two legs, two hands with five fingers each, two feet, one head, symmetrical shoulders, well-formed knees and elbows, no limb crossing the torso, no duplicates, no fused hands.
Setting: white square tiles with grey grout, chrome faucet, toothbrush cup, crumpled towel, smudged mirror, droplets in the basin.
Sharp focus across her entire figure, natural skin texture, muted warm palette, light film grain.