Simplicity 5189; ©1972; Boys' Vest, Pullover Tank Top and Bell-Bottom Pants: The lined vest with front button and chain closing has low round neckline and top-stitching trim. The pullover tank top has low round neckline, top-stitching and optional purchased belt. The top-stitched bell-bottoms pants with shaped seam interest have fly front zipper closing, patch pockets, waistband and purchased belt slipped thru self-fabric carriers.