Fop became a pejorative term for a man excessively concerned with his appearance and clothes in 17th-century England. Some of the many similar alternative terms are: coxcomb, fribble, popinjay, dandy, fashion-monger, and ninny. Macaroni was another term of the 18th century more specifically concerned with fashion.
Colley Cibber as Lord Foppington in John Vanbrugh's The Relapse (1696)
A foppish medical student smoking a cigarette, denoting a cavalier attitude
The Upper Crust, October 2007, in New York City
A dandy is a man who places particular importance upon physical appearance and personal grooming, refined language and leisurely hobbies. A dandy could be a self-made man both in person and persona, who emulated the aristocratic style of life regardless of his middle-class origin, birth, and background, especially during the late 18th and early 19th centuries in Britain.
Parisian costumes: The dandies of Paris in 1831.
The British Dandy: Beau Brummell in a double-breasted sportscoat and odd trousers, in 1805. (Richard Dighton).
In The Dandies' Holy of Holies: a man scans an over-sized edition of the novel Pelham: Or, The Adventures of a Gentleman (1828), by Edward Bulwer-Lytton. The illustration, by E. J. Sullivan, is from an 1898 edition of the novel Sartor Resartus (1831), by Thomas Carlyle.
The French Dandy: The symbolist poet Robert de Montesquiou. (Giovanni Boldini).