Photorealistic Full-Body Mirror Selfie with Identity Lock

A highly detailed prompt designed for an image generation model (specifically mentioned for 'nano banana pro') to create a photorealistic, high-resolution full-body mirror selfie of a young woman in a modern gym. The prompt emphasizes strict identity lock based on an uploaded reference image, demanding absolute preservation of facial features, skin texture, and expression, while detailing her outfit, pose, environment, and lighting conditions for a casual fitness lifestyle aesthetic.