Ever Wondered What Prince George Calls The Queen?

Last weekend Princess Charlotte was Christened it was a family affair with most of the royal family in attendance it raised a question. What does prince George call the queen? 

Most people are required to call her 'Your Majesty' and 'Ma'am.' A lot of people call their grandparents Grandma, Nana or Granny turns out Prince George is just like many grandchildren around the world calling The Queen Granny.