The long black form exposes the shoulders above a straighter strapless upper edge. The waist sits closer to the body, with fabric gathering into more pronounced hip folds below it. A high front opening shows one leg and a dark open-toe shoe with an ankle strap. Broader quieter fabric areas continue further down beside it. Both arms remain low at the sides. The upper head area above the mouth is missing. The photograph explains neither a particular fibre, confirmed inner support nor a suitable outdoor temperature.
Consider the visible shoe with the opening without deriving your entire lower length from it. A normal complete rear belongs in your own fitting. Compare the real hem with your exact shoes while standing and walking. The quieter dark fabric offers a surface comparison beside the more densely reflective references.
If the strapless edge interests you, ask about its actual inner construction on the offered model. Add your planned underwear and any extra layer. A bare shoulder alone guarantees neither support nor a pleasant temperature sensation.