Priest collars are also known as clerical collars, dog collars or tab collars. These collars are white and are typically worn by Catholic priests, Anglican clergy, and other religious leaders. The name 'dog collar' is derived from the resemblance of the collar to a dog's collar. It is a symbol of the religious office and is worn with a black suit. The history of the collar dates back to the 19th century, when it was predominantly used by Protestant clergy members for its simplicity and modesty. In modern times, the collar has become a recognizable symbol of clergy attire, and different variations exist to suit different religious practices.