The life of Princess Elizabeth before she was Queen
Newsround looks back at the life of Princess Elizabeth before she became Queen
Princess Elizabeth gives a wave to the crowds after her father has become King George VI. He was crowned after his older brother stepped down.
Princess Elizabeth was taught at home, not at school. She studied art and music and enjoyed drama and swimming. She also joined the Girl Guides when she was 11. Here she is in 1943 practising first aid on her sister Princess Margaret.
On 10 October 1940 Princess Margaret and Princess Elizabeth (then aged 14) made a radio broadcast. It was a message of sympathy to the children of Britain and the Empire.
Princess Elizabeth got married in November 1947. Her husband Prince Philip was the son of Prince Andrew of Greece. Here they are waving from the balcony of Buckingham Palace, just like Kate and William did after their wedding.
Here's Princess Elizabeth and Prince Philip with their first child - Prince Charles. He was born on 14 November 1948.
Her second child came two years later - Princess Anne was born 18 August 1950.
When her father died of cancer in 1952, Princess Elizabeth became Queen Elizabeth II. Here she is arriving back in the UK, dressed all in black.
Princess Elizabeth was born in London on 21 April 1926. Here she is at her christening.