A 30-year-old chunky curvy blonde woman on all fours atop a soft mat or bed, viewed from behind at a low, close angle. She wears tight-fitting black yoga pants stretched tightly over her wide hips and full round buttocks, the fabric pulled taut between her thick thighs and slightly wedged into her curves. Her soft belly hangs naturally beneath her, and her sagging natural breasts are barely visible beneath a loose tank top. Her long blonde hair is tied in a messy ponytail, some strands falling around her shoulders. Her posture is confident and teasing — hips slightly tilted, back arched, thighs apart. Warm ambient lighting softly outlines the shape of her ass and the fabric tension across it. Realistic body texture, stretch marks, soft skin folds, adult detail, body-positive, no nudity — only the promise of what's hidden beneath.