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[Subject] A natural mirror-selfie portrait of a young woman with medium-length chestnut-brown hair, soft makeup, rosy cheeks, and a relaxed confident smile, wearing a fitted black long-sleeve crop top and light-wash jeans while holding a black smartphone.

[Environment] Neutral-toned bathroom interior with tiled walls, a white door behind the subject, towel bar at frame right, and soft hotel-style warm lighting reflected through a clean rectangular mirror. The setting should feel tidy, everyday, and believable rather than overly staged.

[Composition/Camera] Vertical mirror-selfie framing from mid-thigh to above the head. The subject stands slightly angled with one hand on her hip and the phone raised in the opposite hand, creating a casual influencer-style pose. Keep the mirror edge subtly visible at the bottom to reinforce the selfie context.

[Lighting] Soft warm overhead bathroom lighting with even facial illumination, gentle skin glow, and minimal harsh shadows. The light should flatter natural skin texture and maintain a cozy indoor tone.

[Style/Rendering] Lifestyle portrait photography, casual fashion selfie, polished social-media realism, clean everyday aesthetic, understated influencer look, subtle editorial sharpness with natural color treatment.

[Detail constraints] Preserve natural facial proportions, healthy skin texture, and loose softly layered hair. Keep wardrobe simple and fitted, with the black top contrasting against light denim. Maintain a believable bathroom environment without heavy stylization or luxury exaggeration. The image should feel authentic, fresh, and effortlessly presentable.

Negative prompt: glam studio lighting, excessive retouching, exaggerated lips, cluttered bathroom, extra mirrors, warped phone, artificial body proportions, heavy contour makeup, neon color grading, blurry hands, messy background.

Suggested parameters: realism high, stylization 90, skin retouch low, warmth medium, sharpness medium, lifestyle authenticity very high.

Delta prompt strategy:
1. If the subject looks overstyled, return to minimal makeup and natural rosy skin.
2. If the bathroom becomes luxurious or unrealistic, keep it simple, neutral, and hotel-like.
3. If the pose stiffens, restate one hand on hip and one hand holding the phone casually.
4. If the black top loses shape, preserve a fitted long-sleeve cropped silhouette.
5. If hair becomes overly polished, keep soft natural layers and slight texture.
6. If lighting becomes harsh, use warm diffused bathroom illumination with even facial light.
7. If the selfie context weakens, keep the phone visible and mirror framing obvious.
8. If body proportions drift, preserve realistic torso and arm length with natural waist placement.
9. If the palette feels cold, warm the tones with beige tile and indoor yellow-white lighting.
10. If the image feels too commercial, request candid social-media realism over ad photography.