Pyjamas have gone to the world from India.
The people of Europe and America did not have a suitable night dress up to the middle of the nineteenth century. They wore shoulder to ankle garments, which made women look foolish and men look ridiculous.
Luckily for them, in the 1870s, British colonials brought back a new type of nightwear from India called “pajamas” or leg clothes, which became so popular, both among men and women, that it was used as a summer party dress.
In 1920 when Valentino, the hero of the early Hollywood movies, appeared in several films in pyjamas, it became a craze among young boys and girls all over the western world.