A true monarch: Queen Elizabeth's style transformation

Queen Elizabeth II turns 90 on April 21st, and having been named one of the world's most glamorous women by British Vogue, she is known for her elegance and regal style.

She was the first child of The Duke and Duchess of York (later King George VI and Queen Elizabeth) and was named for her mother. She was third in line to the throne, after her uncle and her father. When she was still a young girl, her grandfather passed away, and her uncle, who had become King Edward VIII, quickly abdicated the throne to her father. All of a sudden, Princess Elizabeth was next in line, and the young lady started to study for her future role.

%vine-url="https://vine.co/v/iFQAwwXBZPF"%

Before her ascension to the throne in 1952, the Queen –- then Princess –- was seen wearing printed dresses and ruffle details. She was educated at home with her sister, Princess Margaret, and learned constitutional history, French and religion. Princess Elizabeth married Lieutenant Philip Mountbatten on November 20, 1947, and the couple have four children, eight grandchildren, and now five great-grandchildren with the additions of Prince George, Princess Charlotte and Mia.

Much has changed during The Queen's life, from the invention of television to the first step on the moon, but one staple for the U.K. has been their elegant monarch.

Once Queen, Her Majesty's style took a more sophisticated turn to skirt suits for public appearances (lots of them). What has always remained, however, are her signature strands of pearls. Click through the gallery above to see Queen Elizabeth II's style transformation.

Related video: Queen Elizabeth's regal rainbow style