When the invitation mentions Black Tie or Full Dress, then your host is providing an elegant affair and expects you to dress accordingly. Black Tie is the most common expression, however whichever term used, any black tie event requires a tuxedo.
Six components of a true tuxedo.
Black Evening Jacket: This short evening jacket is the standard in black tie events because the tailcoat has fallen out of favor in modern times. It is typically single-breasted and should have upward peaked lapels. The facing or exposed side of the lapel should be a glossier material than the rest of the suit.
Black Trousers: These are also known as dinner jacket trousers. For black tie events, piping on the sides of the pant are a necessity. The piping could be any fine material such as silk, grosgrain, or satin. Make sure the piping material is coordinated with the facing of the lapel.
Black Cummerbund or Low Waistcoat: The purpose of the black-tie waist component is to conceal the trouser’s waistband and give a slimming effect to the bottom of the shirt. Both require concealing where the suspenders meet the pants.
White Dress Shirt: The tuxedo shirt is unlike other dress shirts. It is made of pique cotton, has small black buttons, pleated front, and a turndown collar. The collar and single-cuffs are preferably starched.
Black Bow Tie: There are two options for the proper black bow tie. The modern, more well-known bow tie is the “butterfly” self-tie bow. The other option is the “bat-wing” bow which is considered a vintage accessory in American formal attire. Take the time to learn how to tie a bow-tie properly.
Black Oxford Shoes: These shoes should be in shined condition. They are light enough to allow the wearer ease when standing in a ceremony on a dance floor.
Even though black tie events are relatively rare for the average man, buying a custom fitted tuxedo rather than renting one is the best option because it can be expertly tailored.
Also, owning a tailored tuxedo can be cost-effective if you attend more than one black-tie event per year. These events include (but not limited to) weddings, dinners, charity dinners, balls and awards ceremonies.