PHASE 1: VISUAL DECONSTRUCTION - **Fabric Physics:** The source garment appears to be a lightweight rayon or crepe viscose. It has a matte finish with low specularity (no shine). The physics engine must simulate a "fluid" drape with medium weight—heavier than silk but lighter than cotton—allowing for soft folds rather than crisp creases. - **Key Features:** The central button placket (vertical alignment) is critical for orientation. The slight gathering at the shoulder seams and the voluminous "bishop" or "bell" style sleeves with elasticated/fitted cuffs must be preserved. The small-scale floral print pattern density needs to remain consistent during warping. PHASE 2: FIT & DRAPE SIMULATION - **Body Mapping:** The target garment is looser than the user's current top. The simulation must generate volume around the biceps and forearms to accommodate the bell sleeves. The fabric must show compression/deformation across the torso diagonally where the crossbody bag strap sits. The hemline should ideally be simulated as tucked into the high-waisted trousers to match the user's current silhouette, or draped naturally over the hips if untucked (simulation choice: tucked preferred for outfit cohesion). - **Occlusion Handling:** This is a high-complexity occlusion scenario. 1. **Hair:** The user's long, two-toned hair covers the shoulders and upper chest. This must be masked and layered *strictly over* the new floral texture. 2. **Crossbody Strap:** The bag strap must remain visible and compress the new fabric underneath it. 3. **Hands:** The user's left hand (touching hair) and right hand (on railing) must mask out the garment sleeves. PHASE 3: ENVIRONMENT & LIGHTING - **Light Match:** The target environment is outdoors under a cloudy/overcast sky, creating soft, cool, diffuse lighting. The source image is warm indoor lighting. The new garment must be relit to reflect "cool white" ambient light. Shadows should be soft and fall downwards, consistent with the railing shadow on the ground. - **Color Calibration:** The "warm black" of the source cloth must be color-corrected to a "cool black" to match the user's existing black trousers. The floral print colors (pinks/creams) must be desaturated slightly to account for the atmospheric perspective of the outdoor setting. PHASE 4: IDENTITY PROTECTION - **Facial Lock:** Absolute pixel preservation required for the user's face, neck, and the specific fall of the hair around the jawline. The hair clip position must remain unchanged. - **Body Integrity:** The user's leaning posture and waist width must not be altered. The simulation must add fabric volume *outward* from the body (due to the loose blouse style) rather than slimming the body to fit the cloth. The hip width defined by the trousers must remain untouched.