Use the uploaded portrait as the only identity reference. Preserve the person’s real facial features, face shape, skin tone, eye shape, nose, lips, jawline, and recognizable hairstyle. Keep the identity accurate and natural. Create an ultra-realistic vertical fitness fashion portrait in a clean studio environment. The person is kneeling gracefully on the floor beside a large exercise ball, with both arms resting naturally on the ball. The pose should feel elegant, youthful, and softly athletic, with a slim natural body shape, realistic anatomy, and a calm, slightly soft expression while looking toward the camera. Scene: a minimalist studio with a smooth mint-green background and floor, softly blended into one seamless backdrop. Add a dramatic yet soft diagonal beam of light across the background, creating a fresh, premium, editorial atmosphere. The overall mood should feel clean, airy, modern, and stylish. Hair: keep the hairstyle consistent with the uploaded portrait, but style it in a polished, slightly more dynamic way suitable for a fitness editorial shoot, with soft natural flyaway strands and realistic texture. Outfit: choose the most flattering athletic outfit automatically based on the person’s face, hairstyle, and overall vibe. Do not copy any existing outfit. The styling should look premium, sporty, feminine, and clean. Use a fitted activewear look appropriate for a studio fitness shoot, such as a stylish short-sleeve or sleeveless athletic top and matching fitted shorts or other suitable sporty pieces. The color palette should harmonize beautifully with the mint-green setting while keeping the whole look elegant and visually balanced. Add subtle accessories only if they enhance the overall styling. Footwear: choose clean, stylish athletic shoes or sporty footwear that fits the outfit naturally and looks realistic. Lighting and image quality: ultra-realistic, high-end commercial photography, soft studio lighting, smooth skin texture with visible pores, natural makeup, refined facial detail, realistic hands and fingers, realistic fabric texture, clean shadows, shallow depth of field, crisp focus on the person, premium fashion fitness editorial quality. Composition: full-body or three-quarter portrait in a tall vertical frame, with the person and exercise ball as the main focus. Keep the composition balanced, clean, and visually striking. No watermark, no logo, no text, no random letters. Negative Prompt: watermark, logo, text, random letters, Chinese characters, low quality, blurry face, bad anatomy, deformed body, extra fingers, missing fingers, broken hands, unnatural arms, twisted legs, oversized head, incorrect proportions, plastic skin, waxy skin, overly smooth skin, heavy AI look, cartoon, anime, doll-like face, fake expression, messy hair, bad eyes, cross-eye, duplicate body parts, distorted exercise ball, unrealistic clothing, poor lighting, overexposed highlights, cluttered background, cheap studio look

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{ "image_generation_prompt": { "subject": { "description": "Young woman Sadie sink with long, voluminous, tousled copper-red hair and fair skin.", "expression": "Energetic and playful face, mouth open in a shout or laugh, winking slightly,