A fictional adult woman in her late twenties with long black hair in a sleek low ponytail and sharp cheekbones, seated on a brass-railed work stool in a gauge room, wearing deep blue lace lingerie and an open ivory shirt, a heavy chain of large smooth plain unmarked links draped across the measuring bench beside her, photorealistic, warm workshop light, vertical portrait, no text, no letters, no numbers, no symbols, no logos, no watermark