The wedding dress with a leg slit has broad floral straps and a V neckline. A defined waist separates the bodice from the full skirt. A high front opening reveals an extended leg and pale narrow shoe straps. Plenty of fabric remains beside it and spreads out at the lower sides. Both hands rest on a low boundary rather than lifting the hem.
This makes the reference useful for separating the open area from the remaining fullness. You might like the leg opening while preferring less side volume. On an actual dress, compare a relaxed stance with your feet together and then a normal step. You can see which edge position belongs to your own movement rather than the displayed pose.
The visible straps provide a specific shoe idea, without requiring that exact design. Try your intended pair with the complete skirt and sit briefly. Notice which shoe sections remain visible through the opening. If you want another slit height, discuss the actual construction and have the proposed solution demonstrated on the model before finalising the overall skirt length.