Jeans are trousers made from denim. Some of the earliest American blue jeans were made by Jacob Davis, Calvin Rogers and Levi Strauss in 1873. Jeans, originally designed for work, became popular among teenagers starting in the 1950s. Historic brands include Levi's, Lee and Wrangler. Jeans come in fits, including skinny, tapered, straight, boot cut, or flare.
Jeans are now a very popular form of casual dress around the world, and have been so for decades. They come in many styles and colors; however, "blue jeans" are particularly identified with American culture, especially the American Old West. Americans spent more than $14 billion on jeans in 2004 and $15 billion in 2005 . . . . . . :))