The goal of neckline selection is often to create balance and enhance the wearer's features. Different necklines have distinct visual effects.
For individuals with a long and thin neck, the elongating effect of a V neckline can emphasize the neck's length and perceived thinness, potentially creating an unbalanced appearance. This neckline might make the neck look even longer and more slender than desired.
Conversely, V necklines can be beneficial for those with shorter necks (creating an illusion of length) or heavier necks (breaking up the width and adding a vertical line).
Therefore, V necklines are typically advised against for individuals with long and thin necks to maintain better visual proportion.