The T-shirt is one of the most popular clothing items in the world, but have you ever wondered how it got its name? The answer is surprisingly simple. When laid flat, its body forms a vertical line while the sleeves extend outward, creating the shape of the capital letter “T.” This distinctive design is exactly where the name “T-shirt” comes from.

The garment first became popular in the early 1900s, when it was mainly worn as an undershirt. The U.S. Navy provided sailors with lightweight cotton shirts because they were comfortable, breathable, and easy to wash. Eventually, factory workers, farmers, and other laborers began wearing them on their own, appreciating their simplicity and comfort, especially during warm weather.

During the 1950s, Hollywood stars such as Marlon Brando and James Dean helped transform the plain white T-shirt into a fashion statement. By the 1960s, it had become a popular way to express individuality through printed messages, artwork, and band logos. Today, T-shirts remain a wardrobe essential worldwide, combining comfort, affordability, and personal style. Despite their evolution over the decades, their name still reflects their simple T-shaped design.