Updated: Feb 14
The t-shirts were initially designed exclusively for men.
In some Muslim countries, women are not allowed to wear a T-shirt in public.
June 21 is International T-Shirt Day, paying tribute to this iconic outfit.
The most common material for making T-shirts is cotton, which people have been growing for more than 7,000 years.
T-shirts have already been made from a myriad of materials, including leather, gold, and even human hair.
More than 2 trillion T-shirts are sold annually worldwide.