沙滩比基尼写真，展现妊娠纹

{
"subject": {
"description": "Young woman with tan, sun-kissed skin and wet, wavy dirty-blonde hair reaching mid-back.",
"physique": "Fit and curvy figure. Prominent glutes showing visible, natural stretch marks (striae). Defined lower back muscles and spine indentation. Bust visible in side/three-quarter profile showing natural volume, heavy mass, and realistic gravity without artificial lift.",
"apparel": "{argument name="bikini pattern" default="Snake-skin pattern"} string bikini in blue, white, and silver scales. Triangle top with thin black strings. High-cut thong-style bottoms with side ties.",
"skin_details": "Highly detailed skin texture including pores, stretch marks on the buttocks, wet/oily sheen reflecting ambient light, and slight natural skin folding at the waist turn."
},
"pose": {
"type": "Standing back view with torso twist.",
"specifics": "Subject is standing with back to camera, twisting torso to her left. Head is turned over the left shoulder, looking directly at the lens. Both hands are holding the side strings of the bikini bottoms at the hip bone, slightly pulling them. Shoulders are relaxed but pulled back.",
"gaze": "Direct, sultry eye contact with slightly parted lips."
},
"environment": {
"location": "Tropical beach at twilight/dusk.",
"elements": "White sand in the immediate foreground. Calm turquoise ocean water in the mid-ground. Old wooden pier pilings visible on the left side in the water. Overcast sky with grey-blue clouds and a hint of yellow sunset light on the horizon.",
"atmosphere": "Humid, calm, slightly moody beach evening."
},
"camera": {
"shot_type": "Medium shot (knees up to head).",
"angle": "Eye-level relative to the subject's standing position.",
"focus": "Sharp focus on the subject, specifically the face and back, with a shallow depth of field slightly blurring the pier and horizon.",
"perspective": "Neutral focal length (approx 50mm-85mm) to flatten features slightly without wide-angle distortion."
},
"lighting": {
"type": "Soft, diffused natural light (overcast sunset).",
"quality": "Even illumination with soft shadows. No harsh sunlight. The light source is ambient, coming from the sky, creating a wet sheen on the subject's skin.",
"shadows": "Subtle, soft shadowing on the right side of the back and under the glutes."
},
"mood_and_expression": {
"mood": "Alluring, confident, raw, natural.",
"expression": "Seductive gaze, relaxed facial muscles, mouth slightly open."
},
"style_and_realism": {
"style": "Raw photorealism, unedited aesthetic.",
"fidelity": "High-fidelity texture rendering. Preservation of skin imperfections like stretch marks and uneven tone. No plastic smoothing."
},
"colors_and_tone": {
"palette": "Cool blues and greys of the sky and water, contrasted with the warm tan of the skin and the cool metallic tones of the swimsuit.",
"grading": "Natural, slightly desaturated background with rich skin tones. Low contrast consistent with overcast lighting."
}