Abstract: A one-piece garment with elastic bands threaded through the binding at the leg openings that allows for custom fitting of the garment. The contraction of the elastic bands through the cord-lock fastener creates a drawstring effect and provides a gathering force upon the garment, which is held securely in place with the cord-lock fastener so that the lower portion of the one-piece bodysuit thereby shortens in length and tightens around the legs to form a snug fit. Once the desired length is attained, the elastic bands and the cord-lock fastener are stored in the back flap of the crotch in a separate compartment, or pocket, held securely closed during wear with a strip of hook and loop fastener. The one-piece bodysuit can be expanded as needed by releasing the cord-lock fastener and pulling the elastic bands back through the cord-lock fastener to loosen the gathered fabric, thereby extending the crotch length of the garment and the diameter of the leg openings.