The T-shirt is one of the most familiar pieces of clothing in the world, but its name comes from something surprisingly simple. When the garment is laid flat, the body forms a vertical line while the sleeves extend outward, creating the shape of the capital letter “T.” That basic design is the reason the name has remained so recognizable.

T-shirts became popular in the early 1900s, when they were mainly worn as undershirts. The U.S. Navy issued lightweight cotton shirts to sailors because they were comfortable, breathable, and easy to wash. At first, wearing one by itself was considered too casual for public life, but that attitude gradually changed.

Workers and laborers soon began wearing T-shirts alone, especially in warm weather, because they were practical and comfortable. Their image changed dramatically during the 1950s, when Hollywood stars helped make the simple white T-shirt fashionable. Marlon Brando in *A Streetcar Named Desire* and James Dean in *Rebel Without a Cause* helped give it a stylish, confident, and rebellious reputation.

By the 1960s, the T-shirt had become more than everyday clothing. People began using printed designs, slogans, artwork, and band logos to express their personalities, beliefs, and interests. The garment became an easy way to communicate a message without saying a word.

Today, T-shirts are worn around the world by people of all ages. Their popularity comes from their combination of comfort, affordability, and versatility. Despite becoming a major part of fashion and self-expression, the name remains tied to its simplest feature: the T-shaped design.