As well as the fancy jewels, palaces and trips around the world, one of the big perks of being Queen is getting two birthdays.
The Monarch's real birthday is on April 21, but she also has an official one in June. The tradition was introduced 250 years ago and it's still going strong - but why?
Well, in what may be one of the most British excuses ever, it's all because of the weather. Since 1748, the monarch's official birthday has been marked by the parade known as Trooping the Colour.
But Edward VII, who reigned from 1901 to 1910, was born in November - which obviously isn't the best time of year for a huge outdoor celebration.
Read more on mirror.co.uk