properly worn only by Chaplains to the Queen and by members of Royal foundations such as Westminster Abbey and some Cambridge college chapels. They are also worn by the Head Master and Master of the King's Scholars of Westminster School. Nonetheless, many cathedral canons wear full crimson cassocks rather than with mere piping, as do many servers guilds and choirs due to longstanding practice. Cassocks are sometimes also worn by readers, altar servers, and choir members, when they do this is the double-breasted style. Readers and altar servers usually wear black cassocks, but those worn by choirs are usually coloured. Some ministers of the Methodist Church of Great Britain traditionally wear double-breasted cassocks (as in the evangelical Anglican tradition). Lutheran In the Evangelical Lutheran Churches of Denmark, the Faroe Islands, Iceland, and the North German Hanseatic cities of Hamburg and Lübeck, clergy wear the cassock with the ruff as vestments. The Cassock is also worn occasionally in American Lutheran churches. In previous years, the cassock was worn in combination with a white surplice which almost entirely covered it. It is customary for a minority of clergy to wear it on special high holidays such as Good Friday and Ash Wednesday. Most commonly, Lutheran pastors wear an alb over a clerical shirt (with clergy collar). Vestments, most commonly a stole, are worn over the alb. Presbyterian In the Church of Scotland, and Presbyterian churches which trace their heritage back to the Scottish church, they typically use the Anglican style of cassock. In addition, it is not uncommon to see full-length cassocks worn in the blue of the Flag of Scotland, which is also tied to the academic dress of the University of St Andrews. As is the custom within the Church of England, ministers of the Church of Scotland who are chaplains to the royal family also wear a scarlet cassock. Over this is typically worn a preaching gown or the academic gown of the minister. During the Edwardian and Victorian era, it was common to see a shortened, double-breasted black silk cassock worn under the gown. It generally reached to the knees and was tied with a simple cincture. However, with the liturgical movement of the 20th century, the classic cassock came back into fashion. Presbyterians in Canada tend to follow the custom of the Church of Scotland, whereas Presbyterians in the United States typically wear an American Geneva gown