Some people are afraid of the cold in winter and like to choose woolen shirts, but remember, don't make your shirt fabric thicker than the suit fabric outside! It would be like wearing a small cotton-padded jacket under a suit, but it can laugh very much. In order to keep out the cold, you can choose a new light and warm shirt with high count cotton cashmere fabric; Or put a cashmere coat over the suit. In short, you can't let the shirt bulge.