Modern Living: The American T Party

From Waikiki to Wall Street, men, women and children of all vintages, shapes and inclinations are finding a new way to get something off their chests —by putting it on them. They are doing so decked out—and frequently spaced out—in versions of the old World War II T shirt. Underwear elevated to glamour, the current Model T has suddenly become the hottest fashion trend in the U.S. It might be called the dress-to-express vogue.

In infinite variety, the new T shirts are printed to order by the thousands with a picture or slogan that...