Abstract: A male upper garment includes front and back panels whose sides and shoulder portions are sewed to have a neck opening at the top center and arm openings on the upper sides; and a pair of pectoralis major reinforcing means each having a recess for receiving a wearer's left and right pectoralis major muscles, the means' thickness and width being tapered from the bottom end of the recess to the shoulders and from the center of the left and right pectoralis major muscles to the sides, the means being attached to portions opposing the pectoralis major portions on the inner surface of the front panel. With those elements, the garment displays an appearance of a man of a well-developed pectoralis major muscle.