In 1993 Estelle Ellis, Seventeen magazine’s first promotion director, gave a speech at the Fashion Institute of Technology titled “What Is Fashion?” Ellis gave her answer. Fashion is a perpetual-motion machine expressed in four areas: “mode—the way we dress; manners—the way we express ourselves; mores—the way we live; and markets—the way we are defined demographically and psychologically.”

After Mademoiselle Bertin became dressmaker to Marie Antoinette, “all wished instantly to have the same dress as the queen,” wrote lady-in-waiting Jeanne-Louise-Henriette Campan. “The expenditure of the younger ladies was necessarily much increased; mothers and husbands murmured at it; some few giddy women contracted debts; unpleasant domestic scenes occurred; several families either quarreled or grew cool among themselves; and the general report was that the queen would be the ruin of all the French ladies.”

Washington Post fashion critic Robin Givhan reported on a pink blazer and black V-neck shirt worn on the Senate floor in 2007. “There was cleavage on display Wednesday afternoon on C-SPAN2,” Givhan wrote. “It belonged to Senator Hillary Clinton.”

A Japanese shogun in 1615 attempted to eradicate the popular fashions of the kabuki-mono, young men from the fringes of samurai communities who favored long hair with shaved foreheads and temples, large swords with showy red scabbards, imported velvet collars, and short kimonos with lead weights sewn into the hem. “Clothing should not be confusing,” stated a new samurai dress code.