PHASE 1: VISUAL DECONSTRUCTION - **Fabric Physics:** The source garment is a heavy-weight cotton fleece or jersey blend. It possesses high structural integrity with low elasticity compared to the user's current thin t-shirt. It has a matte finish with soft light diffusion. The simulation must reflect weight; it will not cling to the skin but rather form tubular folds and rigid structures, particularly around the hood and cuffs. - **Key Features:** The structured hood geometry (which adds significant volume around the neck), the two dangling drawstrings (metal tipped), the central kangaroo pocket, the dropped shoulder seams, and the ribbed elastic cuffs and bottom hemline. The heather grey texture granularity must be preserved. PHASE 2: FIT & DRAPE SIMULATION - **Body Mapping:** Due to the user's leaning pose against the wall (right arm extended, left arm bent), the hoodie must exhibit specific gravitational reactions. The fabric will pull tight across the right axilla (armpit) and hang vertically from the right latissimus dorsi. On the bent left arm, the heavy fleece must bunch significantly at the inner elbow (antecubital fossa), creating deep lateral folds. The bottom hem should sit loosely over the hips, obscuring the waistband of the jeans, unlike the current semi-tucked t-shirt. - **Occlusion Handling:** Critical segmentation is required for the user's long dark hair, which drapes over both shoulders; this hair must be masked and layered *on top* of the hoodie fabric. The bracelets on the left wrist present a depth conflict; the hoodie sleeve cuff should naturally rest just above them or partially cover them, but should not clip through them. The user's glasses must remain untouched. PHASE 3: ENVIRONMENT & LIGHTING - **Light Match:** The scene utilizes soft, diffuse daylight entering from the upper-left (viewer's perspective). The hoodie simulation must render cast shadows on the viewer's right side of the torso and deep occlusion shadows inside the kangaroo pocket and under the hood. The hood itself must cast a soft shadow onto the upper chest area. - **Color Calibration:** The source grey is cool-toned, while the user's environment has warm ambient occlusion from the wooden door and cream walls. A subtle warm color grading (increasing yellow/orange curve slightly) must be applied to the grey fabric to match the environmental white balance. PHASE 4: IDENTITY PROTECTION - **Facial Lock:** Absolute pixel preservation required for the facial region (eyes, nose, mouth), jawline, glasses, and the specific texture/flow of the hair. - **Body Integrity:** The generation must strictly adhere to the user's skeletal structure. Do not slim the torso or arms. The simulation must acknowledge that the hoodie adds volumetric bulk compared to the t-shirt; the silhouette should expand outward slightly to represent the thicker fabric, but the underlying body positioning must remain unaltered.