PHASE 1: VISUAL DECONSTRUCTION - **Fabric Physics:** The source garment appears to be a medium-weight cotton or cotton-silk blend with a matte finish. It possesses a structured yet fluid drape (A-line silhouette). Unlike the stiff denim currently worn by the user, this fabric should exhibit soft, rolling folds rather than sharp creases. It has low specularity; light should diffuse across the surface rather than creating harsh highlights. - **Key Features:** The distinct magenta/plum colorway with large-scale pastel floral/leaf motifs must be preserved without distortion. Crucial structural details include the split V-neckline (Mandarin collar style), the 3/4 length sleeves, the side slits at the hem, and the visible stitching near the cuff and hem borders. PHASE 2: FIT & DRAPE SIMULATION - **Body Mapping:** The source garment is a tunic/Kurta (longer length) compared to the user's current short top. The simulation must extend the hemline down to the mid-thigh or knee level, covering the upper portion of the jeans. The fabric must drape vertically under gravity, skimming the torso and flaring slightly at the hips (A-line fit). Since the source has 3/4 sleeves and the target has full sleeves, the simulation requires generative infilling of the user's distal forearms/wrists to replace the current red fabric with skin tone. - **Occlusion Handling:** The watch on the user's left wrist is a critical occlusion object; it must be segmented and layered *over* the new user's forearm skin or the sleeve cuff. The user's hands and sunglasses must remain strictly in the foreground. The hair is tied back, minimizing shoulder occlusion, but the neckline interaction must be clean. PHASE 3: ENVIRONMENT & LIGHTING - **Light Match:** The target environment is outdoors with overcast/diffuse daylight (cool temperature, low contrast). The source image has warmer, directional indoor lighting. The garment's texture map must be neutralized to remove baked-in indoor shadows and re-lit to match the soft, ambient skylight of the river scene. Shadows cast by the garment onto the jeans/ground should be soft and blurred, consistent with the environmental ambient occlusion. - **Color Calibration:** The source garment's warm magenta tones must be slightly color-graded to sit naturally in the cooler, bluish outdoor atmosphere of the target image. Ensure the "black point" of the pattern matches the contrast levels of the rocks and trees in the background. PHASE 4: IDENTITY PROTECTION - **Facial Lock:** Absolute freeze on the user's facial geometry, skin texture, smile, and the sunglasses. The hairline and neck structure must remain unaltered during the neckline swap. - **Body Integrity:** Strictly forbidden to slim the waist or alter the user's posture. The shape of the user's legs (jeans) and feet (crocs) below the new garment's hemline must remain pixel-perfectly identical to the original image. Retain the user's stance on the uneven rocky terrain.