A T-shirt is a style of unisex fabric shirt named after the T shape of its body and sleeves. It normally has short sleeves and a round neckline, known as a crew neck, which lacks a collar. T-shirts are generally made of a light, inexpensive fabric and are easy to clean. The T-shirt evolved from undergarments used in the 19th century and, in the mid-20th century, transitioned from undergarment to general-use casual clothing.

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