Men's Tuxedo (Suits & Blazers)

Silk facing is the marker. Lapels, buttons and a stripe running down the outside of each trouser leg are covered in satin or grosgrain, a ribbed silk. That facing is the entire difference between a tuxedo and a very good black suit.

Everything about the cut assumes evening light. Lapels are peak, pointing upward toward the shoulder, or shawl, curving in one unbroken line. Both are faced in silk so they catch light where matte wool goes dead. The front usually closes with a single button. Trousers carry no belt loops at all, because braces hold them up, and the satin stripe covers the outseam. Midnight blue is worth knowing about, since under artificial light it reads blacker than black wool, which can throw a faint green cast.

Black two-piece suits are not a substitute, whatever the internet claims, because there is no silk anywhere and the cloth falls flat under camera flash. A three-piece adds a waistcoat where black tie traditionally uses a cummerbund, the pleated waist sash, or a low-cut evening waistcoat. Double-breasted dinner jackets need neither, since the wrap already covers the waist. French cuffs are the expected shirt cuff here, with links matched to your studs.

Black tie invitations, evening weddings, galas and awards nights are the whole use case. Buy one only if you attend three or more formal events a year, because below that renting costs a fraction and the shape changes slowly enough that a rental never looks dated. Daytime weddings before six do not call for one at all; a dark suit is the correct answer there.

Rub the lapel facing between your fingers. Real silk feels cool and slightly uneven and absorbs a little light. Polyester satin is slick and throws back a hard white highlight that flash photography exaggerates. Look for side adjusters or brace buttons on the trousers and walk away from belt loops. Store it in a breathable garment bag rather than plastic, since trapped moisture yellows silk facing.