Full-body vertical portrait (2:3), subject in 3/4 profile toward camera, centered between wall and window. Subject: adult woman (25+), slender, long dark hair, no hat, calm/introspective expression. Pose: weight on left leg with right knee slightly crossed; slight torso twist; head angled down so hair shadow softens face; right hand near hip, left arm relaxed along thigh. Wardrobe: opaque BLUE lace bra and matching bikini briefs (no sheer fabric, tasteful fashion lingerie). Breast view: Covered cleavage contour shaped by opaque bra; natural proportions; camera height slightly above bust with a gentle downward tilt to preserve the neckline while keeping the full body in frame. No nipple/areola visibility. Environment: minimalist apartment interior; sheer curtains at left with balcony rails visible; textured interior wall at right; clean floor baseboard. Lighting: strong backlight from window left; soft rim along shoulders/abdomen; low-key with gentle halation and soft roll-off. Camera: focal length 55mm; aperture f/2.2; distance 3.2 m; angle slightly above eye level, tilt −5°; framing head-to-toe in frame; toes visible. Color grade: BLACK & WHITE global grade with SELECTIVE COLOR only on underwear in blue. Selective color: mask target: bra_and_briefs_only; blue palette hex: [#1E3A8A, #2563EB, #60A5FA]; rule: no other hues anywhere; all else strictly monochrome. Style: fashion-editorial, moody noir silhouette, realistic anatomy. Quality: photo-real 4K detail; accurate fabric texture; subtle film grain. Negatives: no explicit nudity, no see-through fabric, no nipples/areola, no genitals, no pornographic poses, no exaggerated anatomy, no other colors besides blue on underwear, no text/logos/watermarks, no minors.
