PHASE 1: VISUAL DECONSTRUCTION - **Fabric Physics:** The source garment appears to be a mid-weight cotton jersey. It has a matte finish with high light absorption and low specularity. The simulation must treat the material as pliable but with moderate structure—it should not cling like the current spandex/ribbed top, nor float like chiffon. It requires a "relaxed fit" physical property setting. - **Key Features:** - The dual branding text ("sporty & rich" and the Adidas trefoil) on the chest must remain undistorted and clearly legible. - The signature three-stripe detail along the shoulders/sleeves must follow the curvature of the deltoids. - The burgundy ringer details (collar and sleeve cuffs) must maintain their color contrast and thickness. PHASE 2: FIT & DRAPE SIMULATION - **Body Mapping:** - **Length Differential:** The source is a full-length tee, while the target is wearing a crop top. The new simulation must extend past the user's navel. Given the high-waisted cargo pants, the physics engine should simulate the hemline bunching slightly where it meets the hip/pant waistline, or drape loosely over the top of the pants. - **Pose Dynamics:** The user's right arm is bent with the hand pressing near the midriff. The fabric tension map must show compression/wrinkling at the inner right elbow and slight stretching across the right shoulder blade area. - **Occlusion Handling:** - **Hair:** The user has voluminous curly hair falling over both shoulders and the clavicle area. Detailed alpha masking is required to layer these curls *over* the new t-shirt stripes and collar. - **Hands:** The right hand fingers are currently interacting with the hem of the green top. In the new render, the fabric must appear to be slightly depressed or blocked by this hand position, or the hand must be masked to layer *over* the abdomen area of the tee. PHASE 3: ENVIRONMENT & LIGHTING - **Light Match:** The target environment is a high-key studio setup with diffuse lighting coming primarily from the front-left. The new garment requires generated ambient occlusion (shadows) under the bust, inside the sleeve openings, and along the right side of the torso (away from the light source) to match the scene's depth. - **Color Calibration:** The source garment is an off-white/cream. The target image has a slightly cool/neutral white balance. The cream tone of the shirt must be preserved but balanced so it does not appear "yellow" against the bright white background. The burgundy accents must react to the studio light brightness without washing out. PHASE 4: IDENTITY PROTECTION - **Facial Lock:** The user's entire head region, specifically the jawline, eyes, and the specific fall of the hair framing the face, must be absolutely frozen. - **Body Integrity:** The user has a slim physique. The simulation must adapt the shirt to her measurements (scaling down the loose tee) without warping her underlying bone structure or slimming her arms. The goal is to show the *shirt's* cut on *her* body, not to reshape her body to the mannequin's proportions.