DIFFERENCE BETWEEN TUXEDO AND SUITS: The difference between a tuxedo and a suit is actually pretty subtle. The primary physical difference between a tuxedo and a suit is the presence of satin. Tuxedos generally have satin lapels, satin or cloth covered buttons, satin pocket trip and satin piping along the side of the pant leg, where suit detailing matches the rest of the suit. FYI, tuxedo pants don’t typically have belt loops, so if you are a belt wearer, you'll want to grab a pair of suspenders.. Typically tuxedos have satin facing on the lapels, buttons, pocket trim, and a satin side stripe down the leg of the trousers.
THE CARDINAL RULE OF BUTTONS: The standard classic suit features a two-button suit jacket. Despite having two buttons, you’re only ever supposed to button the top one, never the bottom, even if you’re standing. If you’re tall or have a long torso, a three-button jacket might work for you. In which case the rules adjust accordingly: always button the middle button, never button the bottom button, and sometimes button the top one.
PANT LENGTH: The pant break refers to how much creasing happens above your shoes. No break is a very modern fashion forward look, a slight break is standard these days, and a deep break tends to make your pants look more old fashioned, ill-fitting or sloppy.
Classic Fit, Trim Fit and Slim Fit: At this point and time in our modern society, there’s no excuse for wearing an old-school, overworn, ill-fitting suit or tux to your wedding. Feel free to choose any style that you like but make sure it fits well!