Planche de référence de coiffures en quatre cases dans un studio beauté

Create a clean photorealistic four-panel hairstyle reference sheet featuring the same young East Asian woman in every panel, maintaining identical facial features, skin tone, makeup, clothing, camera angle, expression, and proportions throughout. Use a minimalist beauty-studio setup with a pure white background, soft diffused lighting, subtle shadows, and evenly spaced rounded rectangular panels arranged in a 2×2 grid. In the first panel, she has sleek long straight dark-brown hair with a soft center part and delicate face-framing strands; in the second, a polished chin-length rounded bob with gently curved ends; in the third, long voluminous layered hair with loose flowing waves and feathered ends; in the fourth, an elegant messy updo with a loose bun, wispy tendrils around the face, and naturally relaxed texture. She wears the same simple pale-blue boat-neck top in all four variations. Each hairstyle should look realistic, wearable, refined, and clearly distinguishable, with detailed individual hair strands and natural volume. Professional Korean/Japanese beauty editorial aesthetic, soft high-key photography, clean composition, symmetrical presentation, realistic facial texture, subtle natural makeup, crisp high-resolution details, vertical 2×2 reference chart.