Modify only the sleeves of the dress.

The current sleeves are short — extend them to become long sleeves (full-length or wrist-length), while perfectly preserving the original fabric, texture, color, and pattern of the dress.

The extended part must look like a natural continuation of the existing sleeves, with no visible seams, no distortion of the pattern, and no change in scale or alignment of the motifs.

Do not modify anything else: no changes to the face, hair, skin, body, pose, background, lighting, colors, or the rest of the dress.

The result must look photorealistic and coherent, as if the dress originally had long sleeves when the photo was taken.