PHASE 1: VISUAL DECONSTRUCTION - **Fabric Physics:** The source garment is a black cotton-jersey blend knit. It possesses medium weight with high light absorption (matte finish) and low specularity. The simulation must replicate a soft pliability, avoiding the stiffness of the current starched blue wrap top. It should drape vertically with gravity, showing minor horizontal tension folds only if stretched across the bust. - **Key Features:** The distinct scoop neckline and wide armholes are critical; the binding on the collar and armholes must be clearly rendered. The bottom hem is straight and stitched, unlike the asymmetrical tie-waist of the current user garment. The solid black color uniformity must be maintained without introducing artificial noise. PHASE 2: FIT & DRAPE SIMULATION - **Body Mapping:** The target garment is sleeveless. The user's current blue top has wide straps; the simulation requires generative in-painting to reveal skin on the shoulder caps where the new tank top covers less area. The tank top has a looser fit at the waist compared to the current cinched wrap top; the silhouette must relax, falling straighter over the hips/skirt waistband rather than gathering. - **Occlusion Handling:** 1. **Right Hand:** The user's right hand rests flat against the upper chest. The new garment fabric must be rendered strictly *behind* the fingers and palm. 2. **Hair:** The voluminous curly hair falling over both shoulders creates complex occlusion. The black tank top must pass *under* these hair strands, not sit on top of them. 3. **Phone/Left Arm:** The left arm holding the phone creates a tight underarm junction; cloth simulation must not clip through the inner arm. PHASE 3: ENVIRONMENT & LIGHTING - **Light Match:** The user environment features warm, indoor artificial lighting (approx. 3000K-3500K), casting soft shadows to the user's right and downwards. The black textile must be lifted from absolute black (#000000) to a dark, warm charcoal value to reflect this ambient warmth. - **Color Calibration:** The source image has studio lighting (neutral/cool). To match the target, the black levels must be adjusted to accept the yellow/orange hue of the room light. Shadows cast by the user's hand and hair onto the black fabric must be deeper and softer than the ambient occlusion. PHASE 4: IDENTITY PROTECTION - **Facial Lock:** The user's visible facial features (eyes, nose, mouth), the phone covering the face, the flower accessory in the hair, and the hair texture itself must be masked and frozen. - **Body Integrity:** Strictly maintain the user's original arm volume, shoulder width, and waist measurement. Do not apply slimming filters or warping. The visible skin tone (chest, arms, legs) must remain consistent with the original image, particularly in areas newly exposed by the sleeveless cut.