The pale grey-blue-looking long dress appears in a side-and-rear view. Slender connections cross the open area before central tie ends extend downwards. The wearer looks towards a phone held in front of the face, while long loose hair overlaps part of the upper back. Below the tie point, the skirt falls in longer, comparatively quiet folds. The crop does not allow the complete lower finish to be compared with a visible pair of shoes.
The lighter colour and reflected light help separate the thin lines from the closed fabric starting lower down. They establish neither a particular fabric nor the same model as the red or blue references. Similar band arrangements are insufficient evidence that separate photographs show colour options of one offered product. Keep the visible comparison apart from product identity.
If this quieter effect appeals to you, name its separate features: slender connections, the distance between crossings and long skirt folds. Ask for a straight, unobscured back view and a complete front view of the actual candidate. The choice can then remain about visible shape while unknown side edges and the real fastening are checked independently.