Lady Louise Windsor

HRH Princess Louise of Wessex, known as Lady Louise Windsor, Louise Alice Elizabeth Mary Mountbatten-Windsor (born November 8th, 2003) is the daughter of Prince Edward, Earl of Wessex and Sophie, the Countess of Wessex. She is eighth in line of succession to the British throne. She was born by emergency Caesarian section, before her due date in December, at Frimley Park Hospital, Frimley, Surrey, England, United Kingdom.

Though officially styled Her Royal Highness and a Princess of the United Kingdom under 1917 Letters Patent, it was announced that her official style would not be used and that she would be known simply as Lady Louise Windsor.Some see this as part of an informal policy to reduce the size of the British Royal Family through the restriction of titles to the monarch, his or her marital family and the children of the Prince of Wales, with others receiving commoner courtesy titles by virtue of their father's peerage, not his membership of the Royal Family.

It is unclear if and when new Letters Patent may be issued to remove her official style. She is the first of the Queen's male-line grandchildren not to be known as "Her Royal Highness" though Prince William of Wales has so far opted not to use his HRH style. (A proposal to similarly change the styles of Princess Beatrice of York and Princess Eugenie of York to Lady Beatrice and Lady Eugenie was blocked by Andrew, Duke of York, their father, who felt it would be unfair to retrospectively change the titles they were born with.)