This is the key keep-or-skip decision for the white variant. The woven surface and button line should cooperate before jewelry, a jacket, or a bottom enters the picture. If neither underlayer treatment produces one dominant route, the blouse is asking you to solve a construction interaction every time you wear it.
Read the darts and hem as one shadow map
The listing identifies side darts and a high-low hem. On white jacquard, both features create changes in light: the darts redirect the woven surface, and the hem creates a curved boundary against the layer or bottom beneath it. Evaluate them as one shadow map rather than as separate fit details.
Stand with light coming from the side, then face the light. The dart shadows should feed into the blouse's side direction without forming sharp pockets of darkness. Next, look at the front-to-back hem transition. Its curve should feel like the final edge of the same movement that begins at the darts.
Now change only the underlayer length or color. If a layer ends inside the blouse, its boundary may add another horizontal line behind the jacquard. A close-toned underlayer that ends beyond the most visible area can quiet that break. A contrast layer needs a deliberate endpoint that does not collide with the dart shadows or the curved hem.