Society is plagued by ill-fitting shirts. It only takes a cursory look at a city street to spot a man in a billowing shirt reminiscent of Jack Sparrow, or one in a shirt so short its hem seeps out of his trousers as he walks, revealing muffin top skin that no one can un-see.
Use this guide to find the perfect fit for all parts of your shirt. Educate yourselves men. It's for the good of all society.