From princess to queen, from mother to monarch, Queen Elizabeth II saw a lot in almost a century of life.
On February 6, 1952, the then-Princess Elizabeth received news that would change her life forever: her father, King George VI, had passed away, and she was going to be Queen. Elizabeth II became the first British monarch to reach the historic milestone of a Platinum Jubilee.
Having overseen the throne for seven decades, she was the longest-reigning British monarch in history. In this gallery, we take a look at the life of Queen Elizabeth II, who would have turned 100 on April 21. Click on for more.