Loose long sleeves on a closer dress contrast strongly with the narrower middle in this front view. The sleeves look sheer and gather at the wrists. The upper edge sits lower at the sides and carries a V-like central dip. Floral patterns follow the longer body area. A larger rear surface is arranged to one side, but the picture does not explain the complete rear neckline of this particular garment.
If the sleeves are your main preference, begin with their course rather than the whole image. How much fullness do you want between upper arm and hand, and where should the end sit? Request understandable sleeve measurements and a view with hands relaxed for an actual offer. An attractively gathered end in a photograph does not establish its position on your arm.
Add matching side and rear photographs of that item. For an older offer, obtain current information about sleeve ends and other desired details too. The surface cannot establish a fibre or production year. If a sleeve alteration would be needed, have it assessed on the particular garment rather than assuming your preferred shape can simply be preserved.