The deep neckline and rounded mini shape give this dress two different focal areas. A horizontal section crosses the front above a small central opening, while the skirt curves outward and ends high on the leg. In this photographed pose, the wearer stands on stairs with a bag held to one side. That position does not replace a check of the centre front in ordinary movement.
At a fitting, use your planned underlayers and lean forward, then straighten without arranging the neckline by hand. Check where the horizontal section sits against the body. If you want a different depth or amount of coverage, ask about that exact change rather than assuming the waist can simply be tightened to solve it.
The short rounded edge should also be assessed while seated. Decide whether preserving its outline matters more to you than changing the length. Try the bag at your normal carrying height and see whether it rests against the flared area. A calm shoe can leave the dress as the main emphasis, but choose it only after you have checked the skirt and movement together.