Have you ever wondered why we call them T-shirts? The answer is surprisingly simple. When a T-shirt is laid flat, its body forms a vertical line while the sleeves extend outward, creating the shape of a capital “T.” That straightforward design is what gave the garment its familiar name.

The T-shirt became popular in the early 1900s, when similar lightweight shirts were primarily worn as undershirts. The U.S. Navy adopted comfortable cotton crew-neck shirts for sailors because they were breathable, practical, and easy to wash. At the time, wearing one by itself in public was generally considered inappropriate.

Eventually, workers, farmers, and laborers began wearing T-shirts on their own, especially in warm weather. Their image changed dramatically in the 1950s, when Hollywood stars such as Marlon Brando in *A Streetcar Named Desire* and James Dean in *Rebel Without a Cause* helped transform the plain white T-shirt into a symbol of youthful confidence and rebellion.

By the 1960s, T-shirts had become a powerful form of self-expression. People began wearing designs featuring slogans, artwork, band names, political messages, and personal statements. Today, T-shirts are among the world’s most recognizable and versatile garments, worn by people of every age and background. Although their cultural meaning has changed enormously over the decades, their name remains wonderfully simple: the shape of the shirt itself looks like a “T.”