PHASE 1: VISUAL DECONSTRUCTION - **Fabric Physics:** The source garment appears to be Viscose, Rayon, or a light Silk blend. It exhibits low structural rigidity, meaning it should drape fluidly rather than holding stiff creases. It has a subtle, soft sheen (specularity) typical of printed rayon, which must be preserved under the new lighting conditions. - **Key Features:** The "Camp Collar" (cuban style open neck) is a defining feature and must replace the target's current high crew-neck silhouette. The large-scale white floral/botanical sketch pattern on the black base must remain crisp. The black buttons and the relaxed, non-elasticized sleeve cuffs are essential details. PHASE 2: FIT & DRAPE SIMULATION - **Body Mapping:** The source shirt is an oversized/relaxed fit, whereas the target is wearing a fitted t-shirt. The new simulation must show a looser drape around the torso and shoulders. Crucially, the target's hands are in his pockets. The hem of the new shirt (which is longer than the current t-shirt) must interact physically with the wrists/forearms, bunching slightly above the pocket entry points or draping behind the wrists, rather than clipping through the hands. - **Occlusion Handling:** The user's hands and wrists create a complex occlusion zone at the hip. The shirt fabric must be simulated *behind* the hands where they enter the pockets. Additionally, since the new shirt has a lower neckline, the system must inpaint the exposed skin on the upper chest/clavicle area that is currently covered by the white t-shirt. PHASE 3: ENVIRONMENT & LIGHTING - **Light Match:** The target environment uses high-key, diffuse studio lighting (cool/neutral white) with soft shadows falling slightly to the user's left and rear. The source garment image has a warmer (yellowish) cast. The black of the shirt must be color-graded to a neutral, deep black to match the clean aesthetic of the target image. - **Color Calibration:** Desaturate the warm tones from the source shirt to match the sterile white background of the target. Ensure the white floral print reflects the bright studio lighting without blowing out the highlights. PHASE 4: IDENTITY PROTECTION - **Facial Lock:** The user's entire head (hair, eyes, nose, mouth, jawline) and the specific skin tone of the neck must be frozen and pixel-preserved. - **Body Integrity:** The user's lean physique and shoulder width must be maintained. While the shirt is loose, the underlying body mesh must not be expanded or artificially bulked up to fill the garment; the fabric must hang loosely off the existing frame. The jeans and shoes must remain completely unaltered.