The mess jacket, also known as a smoking jacket, is a formal jacket worn on special occasions like dinner parties, weddings, and black-tie events. It has a short length, fitted waist, and flared skirt that creates a sharp, elegant appearance. While mess jackets are usually associated with British military attire, there are a few other words used to refer to this garment. Some synonyms include a tailcoat, tuxedo jacket, evening jacket, dress coat, and dinner jacket. Each of these words refers to a jacket that is worn for formal occasions and is intended to create a sophisticated, refined look. No matter what it's called, the mess jacket remains a classic piece of formal wear.