Photorealistic High-Fashion Portrait of a Woman on a Luxury Staircase

An extensive, structured image generation prompt designed to create a photorealistic, high-fashion portrait of a young woman in a luxury setting. The prompt details the subject's appearance, attire (a white off-the-shoulder mini dress), pose, and the opulent environment of a grand interior staircase, specifying lighting, atmosphere, and technical camera settings for a masterpiece quality result.