Under bust cut style line* is a design detail where the seam or cut of a garment runs directly beneath the bust area. It's often used in dresses, tops, and gowns to: * THE ASSEMBLY LINE Box Pleat Dress Pattern Urbanstax 1950's Anne Adams Square Neckline Princess Line Dress Pattern with But Backroom Finds Sorting out the vintage cat dress bust line Using the Lengthen shorten Line to Adjust to Your Size Blog Oliver + S