Suit (clothing)

A suit is a set of clothing intended to be worn together. It may be a semi-formal 'lounge suit' or 'business suit'. It always includes a jacket and trousers (pants). In classical gentlemen's tailoring, a waistcoat (U.S: vest) is usually worn with single-breasted suits.

In formal or semi-formal wear, the suit is worn with various other items. Quality socks, leather lace-up shoes, and a tie are essential: if a tie is not worn, that is casual wear. This outfit is worn in many countries by men in professional jobs such as business, law, and politics. It is also sometimes worn by women and in such cases a dress skirt or tailored trousers are worn.

A suit can be part of a dress code, a set of rules that say what people should wear at an event. Ideally, a suit is tailored to the individual wearer. 'Off-the-peg' suits are much cheaper, but they may need adjusting by a tailor.

Special suits for special dangers include space suits and diving suits.