As good be out of the world as out of the fashion.
Source: In Shorter Bartlett's Familiar Quotations, by John Bartlett, 1937, 1980, 1992.
-- Colley Cibber, (Nov 6 1671-1757), English playwright, poet, actor; His play The Fool in Fashion, 1696, is considered the first sentimental, drama form that dominated the English stage for nearly a century.