A necktie is an elongated piece of cloth, which is tied around the neck with a tie knot. In combination with a shirt, ties are generally worn for formal events, in professional life and on festive occasions. The tie evolved from the tied bow, the so-called bow tie, by continuously cutting them with longer ends, until today's tie was conceived. The tie is worn as a rule under the shirt collar, and there are different ways of tying them. The tie covers the button placket on the shirt front. The tie can be fixed to the shirt with a tie pin.