PHASE 1: VISUAL DECONSTRUCTION - **Fabric Physics:** The source garment is a composite of a black cotton/modal blend t-shirt under-layer and a synthetic fleece vest (gilet) outer-layer. The fleece material (blue and black sections) is thick, semi-rigid, and possesses high light absorbency (matte finish) with very low specularity. It will not ripple like silk; it will fold in soft, bulky deformations. The collar is stiff and self-supporting. - **Key Features:** The horizontal chest seam separating the black yoke from the cyan blue lower body is critical. The central metallic zipper (with pull tab), the standing funnel neck collar, and the slanted welt pockets on the hips must be preserved. The texture map must retain the "fuzzy" micro-surface of the fleece. PHASE 2: FIT & DRAPE SIMULATION - **Body Mapping:** This requires a 90-degree geometry extrapolation. The frontal source image must be wrapped onto the user's side-profile mesh. The vest must add volumetric bulk to the chest and back silhouette, sitting *off* the skin, unlike the user's current fitted grey t-shirt. The collar must rise up the neck, sitting higher than the current crew neck. Gravity will cause the vest to hang vertically from the shoulder point, creating a gap between the garment and the lower back (lordosis area). - **Occlusion Handling:** The user's left arm is the primary occluder. The vest's side panel and the underlying black sleeve must disappear naturally behind the bicep and forearm where applicable. The user's wristwatch (left wrist) is a rigid anchor point; the new garment's sleeve must terminate above it or drape behind it, ensuring the watch remains the top-most layer. The user's beard line must layer *over* the new high collar. PHASE 3: ENVIRONMENT & LIGHTING - **Light Match:** The User Image features soft, diffused daylight entering from the left (front of the user). Consequently, the rendered garment must have higher exposure/highlights on the chest and collar front, graduating to deep shadows towards the back and under the armpit. The flat, even studio lighting of the Cloth Image must be relit to match this directional gradient. - **Color Calibration:** The source blue is vibrant/saturated. To match the User Image's slightly desaturated, naturalistic indoor aesthetic, the cyan hue of the vest must be slightly cooled and desaturated. The black sections of the vest must be lifted slightly in the highlights to match the dynamic range of the user's environment (avoiding "black hole" pixels). PHASE 4: IDENTITY PROTECTION - **Facial Lock:** The user's entire head region—specifically the hair profile, ear structure, beard, jawline, and nose shape—must be segmented and frozen. - **Body Integrity:** The user's arm musculature and posture must remain unaltered. While the clothing silhouette will expand due to the fabric thickness of the fleece, the underlying body mesh (shoulder width, arm thickness) must strictly adhere to the original user's biometric data. No slimming or "fashion model" resizing is permitted.