lounge suit
Quick Summary
The term "lounge suit" primarily refers to a business suit, especially in British English. This type of suit, consisting of a matching coat, vest, and trousers, evolved from earlier styles of men's attire that began in the 17th century. The modern concept of the "lounge suit" emerged around 1860 as informal wear, featuring long trousers, a waistcoat, and a short coat. While "loungewear" today often implies very casual clothing for home, the original use of "lounge suit" and early "loungewear" referred to relatively dressy attire suitable for social lounges or parlors.123
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