1950's Anne Adams Square Neckline Princess Line Dress Pattern with But Backroom Finds Need a little extra opacity for you bust piece on the Betty dress? This is literally the simplest and easiest way!, There are a handful of ways to line the bust piece of this dress, but I wanted to go Classic Tea Length Evening Stretch Satin Dress w Bustline Bow & Boned smcfashion.com 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: *