PHASE 1: VISUAL DECONSTRUCTION - **Fabric Physics:** The source garment is a cotton jersey blend. It possesses a matte finish with low reflectivity. The physics simulation must model medium-weight knit behavior—pliable but with some structural resistance (unlike fluid silk). It should absorb light rather than reflect it, showing soft, diffused shadows in creases. - **Key Features:** The text "Sporty & Rich" (right chest) and the Adidas trefoil logo (left chest) must be preserved without warping. The signature three maroon stripes on the shoulders, along with the contrast ribbing at the crew neck and arm cuffs, are critical design elements. The base color is off-white/cream, not pure bleached white. PHASE 2: FIT & DRAPE SIMULATION - **Body Mapping:** Due to the user's pose (right hand on hip), the t-shirt must generate tension folds radiating from the right hip waistline. The garment should drape naturally over the bust, falling straighter on the user's left side (viewer's right). The sleeve on the user's right arm will ride up slightly due to the raised shoulder/bent elbow. The crew neckline will sit higher than the current red garment's V-neck. - **Occlusion Handling:** CRITICAL: The user's long dark hair flows over the right shoulder and onto the chest area; this must be segmented and layered *on top* of the new t-shirt stripes and logo. The user's right hand (fingers and palm) rests on the waist area and must completely occlude the hem of the new garment. The necklace may be covered by the higher crew neck; if visible, it must layer over the fabric. PHASE 3: ENVIRONMENT & LIGHTING - **Light Match:** The scene utilizes soft, diffused indoor artificial lighting, likely coming from overhead-left. The new garment must accept this warm ambient light, causing the cream fabric to shift slightly warmer in tone rather than staying cool white. Shadows must be cast under the bust, inside the arm creases, and beneath the hair occlusion. - **Color Calibration:** The maroon accents must retain their deep saturation and not appear washed out by the room's brightness. The cream fabric must match the white balance of the room (referencing the white in the picture frame or the wall) to avoid looking like a "sticker." PHASE 4: IDENTITY PROTECTION - **Facial Lock:** The user's face, including eyes, smile, teeth, jawline, and the specific hairline shape, must be pixel-locked and untouched. - **Body Integrity:** STRICT PROHIBITION on slimming, warping, or altering the user's arm volume, waist width, or skin tone. The simulation must fit the garment to the user's existing biometric volume, not warp the user to fit the garment. The grey pants/leggings visible at the waistline must remain unchanged.