A waistcoat (often called a vest in American English, and colloquially a weskit) is a sleeveless upper-body garment. It is usually worn over a dress shirt and necktie and below a coat as a part of most men’s formal wear. It is also sported as the third piece in the traditional three-piece male business suit.
The waistcoat is one of the few articles of clothing whose origin historians can date precisely. King Charles II of England, Scotland and Ireland introduced the waistcoat as a part of correct dress during the Restoration of the British monarchy. It was derived from the Persian vests seen by English visitors to the court of Shah Abbas. The most famous of these was Persia’s ambassador to the court of St. James, Sir Robert Shirley. He was an Englishman who had been a traveler in Persia for years.
John Evelyn wrote about them on October 18, 1666: “To Court, it being the first time his Majesty put himself solemnly into the Eastern fashion of vest changing doublet, stiff collar, bands and cloak, into a comely dress after the Persian mode, with girdles or straps, and shoestrings and garters into buckles… resolving never to alter it, and to leave the French mode”.
Samuel Pepys, the diarist and civil servant, wrote in October 1666 that “the King hath yesterday in council declared his resolution of setting a fashion for clothes which he will never alter. It will be a vest, I know not well how”. This royal decree provided the first mention of the waistcoat. Pepys records “vest” as the original term; the word “waistcoat” derives from the cutting of the coat at waist-level, since at the time of the coining, tailors cut men’s formal coats well below the waist (see dress coat). An alternative theory is that, as material was left over from the tailoring of a two-piece suit, it was fashioned into a “waste-coat” to avoid that material being wasted, although recent academic debate has cast doubt on this theory.
During the seventeenth century, troops of the regular army – and to some degree also local militia – wore waistcoats which were the reverse colour of their overcoats. It is believed that these were made by turning old worn-out standard issue overcoats inside-out (so that the lining colour appeared on the outside) and removing the sleeves. The term “waistcoat” might therefore also be derived from the wastage of the old coat.
During the seventeenth and eighteenth centuries, men often wore elaborate and brightly coloured waistcoats, until changing fashions in the nineteenth century narrowed this to a more restricted palette, and the development of lounge suits began the period of matching informal waistcoats.