PHASE 1: VISUAL DECONSTRUCTION - **Fabric Physics:** The source garment is a cotton jersey blend. It possesses a matte albedo (low reflectivity) and medium structural integrity. Unlike the user's current flowy peplum top, this T-shirt will have a heavier, more gravitational drape. It should absorb the sunlight rather than creating specular highlights. - **Key Features:** The precise "Sporty & Rich" and Adidas trefoil logos on the chest must be warped to match the user's torso rotation without pixelating. The maroon "ringer" style collar and sleeve cuffs, along with the signature three stripes down the sleeves, are non-negotiable geometry that must align with the user's shoulder width and arm circumference. PHASE 2: FIT & DRAPE SIMULATION - **Body Mapping:** The user is angled slightly to her right. The virtual garment must be warped to a semi-profile perspective. Because the user's right arm (viewer's left) is raised to her neck, the T-shirt sleeve on that side must bunch appropriately at the deltoid and axilla (armpit), lifting the hemline on that side. The torso fit should be relaxed/boxy, hanging vertically from the bust point rather than cinching at the waist like the current yellow top. - **Occlusion Handling:** CRITICAL: The user's right hand, wrist, and wristwatch are overlapping the upper chest/shoulder area. These pixels must be masked and layered *on top* of the new T-shirt. Additionally, the user's long dark hair falls over her right shoulder and obscures part of the upper chest; this hair volume must be segmented and composited over the new fabric to maintain realism. PHASE 3: ENVIRONMENT & LIGHTING - **Light Match:** The scene utilizes hard, natural sunlight, originating from overhead/left. The new white T-shirt must cast a self-shadow on the user's right side (viewer's right). The bright white fabric should exhibit slight bounce-light (color bleed) onto the user's jawline due to the high sun intensity. - **Color Calibration:** The source image is studio-lit (neutral). In the target image, the white cotton must adapt to the outdoor color temperature (approx. 5500K-6000K). The shadows on the white shirt should carry a slight cool blue tint to match the ambient skylight and water reflections, preventing the white from looking "pasted on." PHASE 4: IDENTITY PROTECTION - **Facial Lock:** The user's face, including sunglasses, smile, and jawline, is strictly frozen. The hair geometry and texture are to remain untouched. - **Body Integrity:** The user's skin tone on the arms and neck must be preserved. Do not alter the user's arm thickness or torso width; the T-shirt should fit the body as is, without "slimming" or reshaping the underlying anatomy. The white trousers and feet are out of scope and must remain pixel-perfect.