The button-down shirt is a men's fashion marvel. This staple garment with a collar, sleeves that taper off to a cuff, and buttons down the front is versatile enough for any occasion, but only if you have the right fit. Having said that, it can be painfully challenging to find the right fit, especially if the shirt is ready-made! When the shoulders are perfect, the waist is too baggy; when the waist is perfect, the sleeves are too loose, and the chest is too tight when the sleeves are perfect. In short, the struggle is real. But what if there...