Queen Elizabeth II was 22 years old when she gave birth to her first child, Prince Charles.
Prince Charles, the heir to the British throne, was born on November 14, 1948. At the time, Princess Elizabeth (as she was then known) was still five years away from becoming Queen. Her father, King George VI, was still on the throne. When King George VI died in 1952, Elizabeth ascended to the throne at the age of 25, making Charles just three years old.