Why is macaroni a synonym for fop or dandy?

The term "macaroni" became synonymous with "fop" or "dandy" in the 18th century, particularly in Britain, as it referred to a fashionable young man who adopted extravagant styles and tastes, often seen as overly concerned with appearance. This association arose from the "Macaroni Club," a group of young men who traveled to Italy and returned with a taste for luxurious fashion and refined manners. Their flamboyant styles, including elaborate wigs and clothing, set them apart as eccentric and pretentious, leading to the use of "macaroni" to describe similar figures. The term ultimately captured the essence of a man who prioritized style over substance.