Use the person from the reference image, preserve facial features 1:1. Concept: a vertical full-body photorealistic studio portrait with a sport chic aesthetic. Subject: a girl. Setting: a minimalist white studio with a clean background and a light floor. Action & Pose: she is posing with both hands resting on the back of a brown leather chair with a metal leg, one leg bent on the seat, torso slightly leaning forward, looking back over her shoulder into the camera. Appearance: loose hair, natural makeup, same appearance as the reference. Wardrobe: an oversized light sweatshirt with text on the back, fitted dark athletic shorts, white socks, chunky sneakers. Framing & Composition: full-body shot, slightly side angle at hip level, emphasis on the silhouette. Lighting: soft and even light with slight volume and no harsh shadows. Visual Style: photorealistic, sport chic, neutral colors, slight contrast, high detail. Preserve: keep the model's appearance unchanged. Priority Instructions: vertical format, 4K, 9:16.