Topic summary
Princess of the United Kingdom
Extracted from the Wikipedia article British princess.
The use of the title of Princess of the United Kingdom of Great Britain and Northern Ireland is entirely at the will of the sovereign, and is now expressed in letters patent. Individuals holding the title of princess will usually also be granted the style of Her Royal Highness (HRH). The current letters patent were issued in 1917 during World War I, with one extension in 2012.