A short front and longer rear lines define the skirt here. The decorated bodice has a higher sheer-looking neck area and smaller side shoulder sections. Below, the front edge is short while outer sides and rear remain substantially longer. Shoes are visible from the front. This combination explains why a short front view cannot establish the complete amount of fabric or length and why another angle belongs in the choice.
If you want this direction, request front, side and rear of the real model in one matching sequence. Assess the lowest point as well as the short front edge. Walk several steps in the intended shoes and turn. Decide which movement of the longer line you actually want to wear and how it falls beside your body.
The photograph cannot establish a detachable outer layer. Ask how the real connection works before planning two separate wearing states. View the dress seated too, without holding its sides up for comparison. The idea supports the relationship between visible short front and longer outside edge. Construction, composition and possible alterations need clarification on the specific garment being offered.