neckline

A neckline is the upper edge of a garment at the neck opening. It defines how much skin, collarbone, and upper chest area is exposed and interacts with the wearer's posture and accessories. Necklines appear on many garments, including tops, dresses, swimwear, and outerwear.

Common neckline shapes include crew neck (round, sits near base of throat), boat or bateau (wide, horizontal), scoop (U-shaped, lower), V-neck (V-shaped, opens toward chest), sweetheart (heart-shaped curve over bust), square, and plunging. Other variations are halter, one-shoulder, off-the-shoulder, strapless, and plunging necklines. The choice of shape influences the overall silhouette and balance with the wearer’s frame.

Selection depends on fashion trend, body type, occasion, and undergarment considerations. Some necklines require supportive undergarments or fashion tape; strapless or halter necks may need special bras or built-in support, while high necklines can create a modest silhouette. Fabric, drape, and construction also affect how a neckline lies and moves.

Historically, necklines have reflected modesty norms and style currents, with high necks common in certain periods and lower, more open shapes in others. In construction, necklines are finished with bindings, facings, or seam finishes to preserve shape and wearability, and designers may use detailing such as piping, bands, or facings to stabilize the edge.