PHASE 1: VISUAL DECONSTRUCTION - **Fabric Physics:** The source garment is a heathered jersey knit (likely cotton-polyester blend). It possesses high elasticity and low stiffness compared to the user's current structured vest. It has a matte finish that absorbs light, with a specific "heathered" noise texture. The small satin bow at the neckline is the only element that should have specular highlights (shiny reflection). - **Key Features:** The wide "U" or square neckline is the defining silhouette feature. The center satin ribbon bow must be preserved without distortion. The cap-sleeve length and the visible double-needle stitching on the hem and sleeve cuffs must remain sharp. PHASE 2: FIT & DRAPE SIMULATION - **Body Mapping:** Unlike the current stiff vest, the target grey top is form-fitting. The simulation must contour tightly to the user's torso, specifically following the curvature of the bust and tapering at the waist. Due to the user leaning to her right (viewer's left), the fabric should stretch slightly across the left ribcage and compress on the right side. The right sleeve will hang lower due to the extended arm; the left sleeve will sit higher and bunch slightly at the axilla due to the bent arm. - **Occlusion Handling:** 1. **Handbag Strap:** The thick brown strap over the user's left shoulder covers a significant portion of the torso. This MUST be segmented and layered *over* the new grey top. 2. **Hair:** The user's wavy hair falls over both shoulders and touches the upper chest. Accurate alpha matting is required to place the hair *over* the new garment. 3. **Left Arm:** The inner left arm is close to the torso; the garment must pass behind it without clipping. PHASE 3: ENVIRONMENT & LIGHTING - **Light Match:** The scene utilizes soft, diffused studio lighting, predominantly coming from the front-left. The new garment must cast soft, diffuse self-shadows (ambient occlusion) under the bust and in the armpit creases. Crucially, the handbag strap and the user's hair must cast realistic contact shadows onto the grey fabric. - **Color Calibration:** The source garment is cool grey, while the target environment has a strong warm pink/rosy cast. The grey tone of the shirt must be color-graded to accept a slight warm pink tint to integrate with the background and the user's skin tone, preventing it from looking "pasted on." PHASE 4: IDENTITY PROTECTION - **Facial Lock:** Absolute freeze on the entire head region including the sunglasses, eyes, smile, jawline, and neck. The ears and earrings must remain visible and untouched. - **Body Integrity:** The user's arms, hands, and legs must remain exactly as is. No skin smoothing or warping of the arms. Strictly forbidden to slim the waist or alter the bust size; the garment must warp to the body, not the body to the garment. The brown skirt should remain unchanged, with the new top appearing tucked in or ending at the natural waistband.