In the 19th century, the idea of underwear developed, which had not been common before. At some point near the turn of the century, the underwear shirt was developed; the shirt was always a part of clothing since ancient Egypt, though it slowly became more and more popular. Hence, there have been many garments that resemble the T-shirt,[1] though the general trend supported the possibility of less clothing, which prudent morale had forbidden until the 19th century. The origin of the T-Shirt is obscure claims reach at least from California to Britain, and from 1913 to 1948, and it was most likely a slow development during that time.

Most research mentions this possibility that the idea of the T-shirt came to the United States during World War I when US soldiers noticed the light cotton undershirts European soldiers were using while the US soldiers sweated in their wool uniforms. Since they were so much more comfortable they quickly became popular among the Americans, and because of ...more

During World War I, US soldiers, sweating in their woollen uniforms, noticed the light cotton undershirts worn by European soldiers. Since they were much more comfortable, they quickly became popular among the Americans, and because of their design, they were named T-shirts. During World War II, the T-shirt became standard issue underwear in both the US Army and Navy. After WWII, the T-shirt started appearing without a shirt covering it.

A Good Ol' Tailer by the name Tom Tomahawk - in whose memory the name T-Shirt started appearing in the market. There was another reason too. Tomahawk's profession was cutting of wood from deep jungles and sell to the needies in the village where he was living. Because of his professional hazard (usage of Axe mainly) he trimmed his full sleeve shirt to look like sort of a 'half sleeve banion' - which soon was adopted as a style after his extinction. Thus the story....

If u want to know the right answer mix both the answer of sai sierra and subramaniam pvs u will get but T shirt name is due to it's shape only like neck and it's opening from the chest side mean it's making a T shape