Neckline on dresses and blouses which is cut into two, almost semi-circular, curves which resemble a heart. The heart-shaped neckline was popular throughout the 20th century.
FFD, 1998, Cohen, 2004
Context:
The design features a heart-shaped neckline in the front and a high-back, which is often joined to the front by sleeves which cover the shoulders or are full-length.