In Britain, regimental stripes have been continuously used in tie designs at least since the 1920s. In Commonwealth countries, necktie stripes run from the left shoulder down to the right side. In Commonwealth countries, only people affiliated with a regiment (or university, school or organisation) should wear a necktie affiliated with that regiment. When Brooks Brothers introduced similar striped ties in the United States around the beginning of the 20th century, they had their stripes run from the right shoulder to the left side, in part to distinguish them from British regimental striped neckties.