Blue-green shine defines this close crop across torso and waist. Bright blue and green areas sit beside darker zones. A horizontal waist seam divides upper and lower surfaces, with a long black ribbon at the side. One bare arm is visible. The full neckline, hem and back lie outside the image, so the crop mainly explains a colour direction and a local arrangement rather than the complete shape of the garment.
Use the photograph to describe your preferred colour range more precisely. Do you mainly want blue-green or the broader pale pastel variety in another reference? Compare both on the actual fabric or garment in the same light. Look at the darkest zone and brightest reflection together instead of selecting only one particularly luminous small point, keeping the complete distribution part of your judgement.
Request full views for a similar offer afterwards. Only then can you choose the length and upper line you want beside that colour play. Ask about the black ribbon’s function and attachment too. The visible attachment area alone cannot explain every connection. An appealing detail becomes a specific selection question without assigning an unknown material or manufacturing technique to the image.