To the people of the UK, she is Queen Elizabeth II. But her full title is in fact Elizabeth II, by the Grace of God, of the United Kingdom of Great Britain and Northern Ireland and of her other realms and territories Queen, Head of the Commonwealth, Defender of the Faith.
That's a bit of a mouthful, isn't it?! And if that weren't enough, you might also be interested to know that the Queen's full name is also quite long, being Elizabeth Alexandra Mary Windsor.
Over the years Her Majesty has also been given several nicknames - Her husband, the Duke of Edinburgh is said to call her by pet names such as 'cabbage' and 'sausage', while as a child her family referred to her as Lilibet.
Read more on mirror.co.uk