A floor-spread skirt sits below fine shoulder lines and a patterned low-cut upper section in this front view. Below the defined waist, the skirt falls in long vertical lines and spreads across the floor around the wearer. Other dresses are visible in the background, but their presence supplies no product information about the foreground garment. The photograph is most useful for comparing the relationship between a narrow upper outline and a longer lower sweep.
For your fitting, ask to see the skirt before it is spread by hand. Walk, stop and check how much fabric remains behind or beside you. If you want a way to gather it later, have that demonstrated on the offered garment. Do not assume an attachment exists because the skirt can be arranged attractively for a picture.
Ask separately about the upper decorative layer, lower cloth and lining. The visual contrast between them is clear, but their compositions are not. Pair a written material answer with a note about the skirt handling. This keeps the practical reason you chose the image distinct from any unverified fibre or environmental statement.