Abstract: A garment for wear by a person who is being fully immersed in a liquid, such as in a complete immersion baptism, has been provided which is lightweight, opaque and non-clinging to satisfy the requirements of comfort and modesty. The garment has a generalized shape with a bottom opening for the legs of the wearer, a top opening for the head and neck of the wearer, and armholes for the arms of the wearer. The bottom opening is restricted so as to bear against the legs of the wearer to prevent the bottom of the garment from rising as the wearer is immersed. A vent opening is formed near the top of the garment to permit air entrapped during the immersion to escape without causing the garment to expand or billow. A belt for fastening only around the front of the garment is provided for the desired cosmetic effect, without impeding the passage of air to the vent opening.