Curzon Street Baroque is a 20th-century inter-war Baroque revival style. It manifested itself principally as a form of interior design popular in the homes of Britain's wealthy and well-born intellectual elite. Its name was coined by the English cartoonist and author Osbert Lancaster, as Curzon Street in Mayfair was an address popular with London high society. While previous forms of Baroque interior design had relied on French 18th-century furnishings, in this form it was more often than not the heavier and more solid furniture of Italy, Spain, and southern Germany that came to symbolise the furnishings of new fashion. While in vogue, roughly between 1927 and 1939, Curzon Street Baroque was also disparagingly known as "Buggers" Baroque' or "Decorators' Baroque". This was, according to author Jane Stevenson, because "a statistically implausible number of important men and women, and their decorators in the interwar arts, were gay". Among them were many of the leading writers, poets, and designers who used and promoted the style.

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