This red reflective rear view shows thin straps and a low upper back edge. A narrow central line looks like a closure. Several rows with apparently free ends occupy the lower area. One hand is behind the hip, while the other is further forward and only partly visible. Small rectangular pieces can be seen on the straps. The upper head and feet are outside the photograph. It therefore provides neither a complete length comparison nor the finished footwear combination.
Use this reference for your preferred rear coverage. The thin straps cross relatively open shoulder and back areas. Whether their length can actually be changed, and how the dress closes, must be demonstrated on the real offer. The photograph alone does not confirm those functions. Visible rectangular pieces do not establish how an adjustment would work.
This image is not a proven match for the silver-looking or rose front. Ask for the same red model’s own front view. Add ordinary standing without a hand behind the hip, then try your intended undergarments. Only those combined views support a decision about its rear line within your complete outfit. The pose cannot establish comfort.