Catch a Swinging Sixties vibe and create Vintage 1960s Jiffy Dresses with this sewing pattern from Simplicity. Follow steps to make a Jiffy shift dress using three main pattern pieces. It's ideal for any season with optional 3/4 length sleeves. These easy dresses also have stand-out retro features including French darts and a bateau neckline. This pattern includes a tie belt. Patterns available suit US sizes 4-22.