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Informal wear or undress, also called business wear, corporate/office wear, tenue de ville or dress clothes, is a Western dress code for clothing defined by a business suit for men, and cocktail dress or pant suit for women. On the scale of formality, it is considered less formal than semi-formal wear but more formal than casual wear. Informal or undress should not be confused with casual wear such as business casual or smart casual; most situations calling for “informal wear” will usually tolerate casual dress to varying extents.
The suit originated as leisure wear in the late 19th century but eventually replaced the frock coat as everyday wear in the city. After World War I, the suit was established as informal daily wear. Hats, such as fedora or bowler hats, are sometimes worn with informal wear.
Informal wear is commonly applied for office use in professions like politics, academia, law and finance, business, as well as certain events such as job interviews in other sectors. It is a traditional dress code that aims to indicate respect to the situation and not draw attention.[1]
The suit originated in Britain in the 19th-century as a leisurewear. Seeking a casual alternative to the knee-length, heavy frock coats then considered appropriate business dress, men began to wear lighter coats cut just below the seat when not engaged in business.
Standard suit-making fabric is fine combed wool, with the inclusion of cashmere in more expensive f