Black satin sleepwear at a bathroom mirror

Create an ultra-realistic smartphone photograph. The subject is a 20-year-old adult Chinese woman standing in a modern boutique-hotel-style bathroom, wearing an elegant black satin spaghetti-strap sleepwear top and matching lounge shorts.

She has neat, short black hair with natural volume and a few casually loose strands, and light, natural makeup.

The camera shoots from slightly to one side behind her, showing a natural back and rear three-quarter view. Her face appears naturally in a softly glowing oval mirror. One hand rests lightly on the gray stone vanity, while the other casually adjusts the short hair near her ear. Her movement is relaxed, without deliberately posing.

The bathroom features dark gray microcement walls, a light gray floating stone countertop, a matte black faucet, an oval backlit mirror, and a translucent glass partition. A few bottles of perfume and skincare products sit on the countertop. The space is clean and minimalist, with understated sophistication.

Warm ambient light creates delicate, soft highlights on the black satin while retaining real skin texture, natural shadows, and fabric folds. Simulate real smartphone photography: slight digital grain, natural perspective, accurate mirror reflections, realistic body proportions, and the everyday atmosphere of a casual snapshot.

Composition requirements: vertical 3:4 aspect ratio, with the subject's back and rear three-quarter view on the left of the frame, her reflected profile in the upper-right area, and the vanity in the lower-right area. A single person in the image, natural spatial relationships, and mirror reflections that obey real physical laws.

Negative prompt: CGI, illustration, plastic skin, excessive skin smoothing, malformed structures, extra limbs, duplicate people, incorrect mirror reflections, unnatural poses, fake lighting and shadows, excessive sharpening, text, watermarks, logos.