What is trouser bell bottom?

Bell bottom trousers are a style of pants that flares out from the knee downwards, forming a bell shape at the hem. The style originated in the 1960s and was popularized in the 1970s, particularly as a fashion statement for young people. Bell bottoms were often made from denim, but also came in a variety of fabrics including corduroy, polyester, and velvet. They were typically worn with platform shoes, creating a dramatic visual effect that was synonymous with the disco era. Today, bell bottoms are still in fashion and can be seen on runways and in casual wear.