A diced bonnet means you support the union of the Crowns in the 1700s. It indicates allegiance to the current monarch, HRH Queen Elizabeth II, and the House of Windsor. It is also used by those who are part English to indicate English blood and/or loyalties. I was taught that only sassenachs wear diced bonnets. However, in the U.S. most people do not know or care about British political history. We are Americans. Most of the people who wear diced bonnets just buy them because they feel they are stylish. Because it is no longer political, and seems to be a fashion issue, I would wear a diced bonnet if it matched my tartan.