👉 Pajamas are a type of clothing that is often worn in the United States and other countries as an alternative to traditional shirts. They come in various colors, patterns, and designs, making them versatile and easy to wear. In the United States, pjs can be seen on many occasions such as at home, work, or casual outings. They are commonly worn over a shirt or under a jacket for a more casual look, although they can also be worn with pants or shorts. Paj