The invention relates to a shirt with a collar attached thereto and a left-hand and a right-hand chest blank which close in the chest area with an underlap having buttons and overlap having button-holes. A reinforcement area is provided which is bounded in a substantially triangular manner by three edges; a first edge which is connected to the underlap or the overlap, a second edge connected to the collar and a third edge connected to the chest blank. There is a button or a button hole below the collar and the level with the first edge.