Gentlemen of the Victorian era wore suspenders, and belts were not common, except for working class people who used them to hold tools or weapons. The buttons needed to hold them on are rarely found in modern clothing, but most come with clips that can be used with any trousers.
Also known as waistcoats, the vest is one of the few vanities permitted to Victorian gentlemen. Florid colors and bright fabrics were considered unseemly for men after the Regency period, and even then a man who wore bright waistcoats was referred to as a “dandy” (i.e. not a serious man at all). Luckily this is no longer true, and one way to be unique and stand out amongst all the brown and black frock coats is by choosing a really individual and unique vest for yourself. If you are ever going to spend money on a Steampunk costume, this is one of the areas where you are better off finding a costume shop for something special.
All good Victorian gentlemen wore a coat or jacket out of doors. Some even wore them to go to bed! (Dressing gowns). Steampunk coats come in a number of styles, including frock coats, tailcoats, or even something a bit more modern. This is another place where you might want to someday spend money because the length and fullness of the men’s Victorian frock coat really died out after the Edwardian era. They are also a good way to develop your character since the coat he wears is bound to be reflected this way. Explorers need sturdy coats, military men and airship captains will have uniform coats, etc.
Hats are common accessories for Steampunk, since men were especially expected to cover their heads out of doors. There is a wide variety to choose from. Working class characters may wear a flatcap or a Sunday-Best Pork Pie hat. A middle-class character might wear a bowler, and an aristocrat a Top Hat. Specialty hats for military men, explorers, and sportsman are also very much in evidence.
Image Courtesy of taymtaym