How much do you know about Queen Elizabeth II?
Learn more about the world's most-famous monarch
No one in the history of the British monarchy has sat on the throne longer than Queen Elizabeth II. She is the UK's jewel and is seen by many as one of the greatest personalities of the 20th and 21st century. On April 21, the Queen of England celebrates her 92nd birthday and in her honor we've gathered some interesting and entertaining facts about the life of the world's most famous monarch. Click through the following gallery and see how much you know about the Queen!