The strapless wedding dress has a shaped upper edge with a deeper centre. Vertical sections, some sheer-looking, divide the bodice before it meets the full skirt. A high opening shows the extended leg and part of a dark pointed shoe. Broad pale skirt sections remain beside it. This gives a specific footwear alternative to the light narrow straps visible in the other open-skirt references.
Assess the upper shape first without letting the shoe contrast decide everything. Try the real bodice in a relaxed stance and while seated before choosing whether to combine it with a visible leg opening. The vertical lines in the photograph do not explain the inner support of the actual model being offered.
For the lower comparison, keep the dress constant and change only your available shoes. A dark pointed front can mark the opening differently from fine pale straps. Choose the combination you prefer in movement and in a normal stance. If you want less leg exposure, ask about a specific alternative edge position on the real skirt, rather than mentally closing the opening in this image.