Abstract: A right-left separation type brassiere for protecting and shaping right and left breasts separately, comprises: a cup portion 11 for protecting and shaping one of the breasts; band portion 12 being connected to a lower portion of the cup portion 11 and adapted to attach the cup portion by being passed around a chest once; and a shoulder strap 13 being attached at one end thereof to an upper portion of the cup portion and at the other end thereof to the band portion at a back after passed over a shoulder. A supplementary pad for supplementing a swelling of the breast is provided to the cup portion.