Photorealistic smartphone photograph of a beautiful adult South Korean woman in her early 20s.

COMPOSITION: Vertical 2:3 portrait, framed from head to upper thighs. She stands centered on a grassy forest path, facing the camera with her hips slightly tilted. She holds a thin white straw to her lips with her right hand and a small white illustrated paper cup in her left hand. Her eyes glance slightly to her left, with a subtle, playful expression.

HAIR: Short black hair tied back neatly, with a few loose strands framing her face.

OUTFIT: Two-piece black holographic sequin bikini with vivid hot-pink piping. Triangle bikini top with small metallic connector details along the straps. Matching thong-style bikini bottom with a distinctly low-rise waistband resting on the hip bones, a narrow front panel, hot-pink trim, and small silver decorative connectors at both hips. The low-rise silhouette is clearly visible.

ENVIRONMENT: Quiet green forest clearing with tall straight tree trunks, dense foliage, short grass, and a simple metal fence partially visible in the background. Natural blue sky peeks through the canopy.

LIGHTING: Bright natural daylight filtering through the trees, soft shadows across the face and body, realistic skin texture, subtle highlights on the holographic sequins.

CAMERA: Casual handheld smartphone photography, eye-level perspective, natural proportions, realistic colors, sharp subject detail, authentic candid vacation snapshot.

AVOID: long loose hair, different bikini colors, high-waisted bottoms, wide waistband, shorts, skirt, excessive accessories, exaggerated anatomy, distorted hands, extra fingers, artificial skin, cinematic overprocessing, CGI, illustration, watermark, text，改為傍晚黃金夕陽逆光氛圍，溫暖金色陽光穿透畫面，形成迷人輪廓光與長影