T-Shirts, made of a light, inexpensive fabric, were easy to clean. The earliest T-shirt dates back to sometime between the Spanish–American War and the year 1913, when the U.S. Navy began issuing them as undergarments. Following World War II, it became common to see veterans wearing their uniform trousers with their T-shirts as casual clothing. By the year 1920, the word "T-shirt" became an official American-English word in the Merriam-Webster Dictionary.  They became even more popular in the 1950s after Marlon Brando wore one in A Streetcar Named Desire, finally achieving status as fashionable, stand-alone, outer-wear garments.  Often boys wore them while doing chores and playing outside, eventually opening up the idea of wearing them anywhere and everywhere. In the 1960s the T-shirt became a means for self-expression as well as to convey commercial advertisements, protests, and souvenir messages.  Over time the T-shirt has been adapted to the modern world. Many different designs and fabrics along with styles of T-shirts have been created since the beginning of it all. Some of the styles of T-shirts include crew neck, raglan, ringers, tanks, babydoll, spaghetti strap, V neck, A-shirts, camisole, and polo.