The Queen has celebrated her 80th birthday with 2,000 children at a special party at Buckingham Palace.
The grounds were transformed into scenes from some of the most famous children's books, with 80 costumed characters entertaining the guests.
There were surprises inside the palace too, with a giant model of the BFG sitting at huge piano.
The highlight of the evening was a special TV show in which villains steal the Queen's handbag and her glasses.
Loads of huge stars like Daniel Radcliffe, Emma Watson and Rupert Grint were in the show, as was model Sophie Dahl who author Roald Dahl based Sophie in the BFG on.
The guests all got a special purple hamper of food when they arrived, with the goodies inside put together by top chef Jamie Oliver.
Toad of Toad Hall from Wind in the Willows
Harry Potter author JK Rowling was among one of the first celebrities to make her way into the garden and later read from The Half-Blood Prince.
The children, aged between 4 and 14, won tickets to the party in a lottery.
The Queen turned 80 on 21 April, although her official birthday, celebrated with the annual Trooping of the Colour parade, is marked on 17 June.
If you're not one of the lucky kids to be invited to the party check out the Newsround website because one of the guests, Millie, texted us the gossip and even some pics as it happened.