Abstract: The present invention discloses a one-piece bodysuit for infants and toddlers having a torso portion and a crotch or leg portion. In one embodiment, a portion of the bodysuit may be formed of unidirectional expansion fabric. In another embodiment, the crotch portion includes a first coupling member including textured material that engages a fastener disposed on a second coupling member. In still another embodiment, a portion of the garment is formed of a first unidirectional expansion fabric configured to expand in a first direction, and a second portion of the garment is formed of a second unidirectional expansion material configured to expand in a second direction. The bodysuit can accommodate children of various heights and girths, accommodating a growing child.