What do you do on the day you turn 90?
If you are Queen Elizabeth II, the entire country throws you a party. But first things first. You pose with the next generation of Windsors.
The children in the photo above are: James, Viscount Severn, 8-years-old, left, and Lady Louise, 12-years-old, second left, the children of The Earl and Countess of Wessex.
Mia Tindall, holding The Queen's handbag, the two year-old-daughter of Zara and Mike Tindall; Savannah 5-years-old, third right, and Isla Phillips, 3-years-old, right, daughters of The Queen's eldest grandson Peter Phillips and his wife Autumn.
Then there is Prince George, 2-years-old, second right, and in The Queen's arms and in the tradition of Royal portraiture, the youngest great-grandchild, Princess Charlotte, 11-months-old, children of Prince William and Kate Duchess of Cambridge.
The rest of the country was in a party mood.