When a 25-year-old Elizabeth assumed the throne from her father, King George VI, on February 6, 1952, no one could've guessed that she'd one day become the longest reigning monarch.
In 2017, she celebrated a Sapphire Jubilee, which marked her 65th year on the throne. Her Majesty also had a number of other special occasions to commemorate last year, including her 70th wedding anniversary with Prince Philip, and her grandson, Prince Harry's engagement to Meghan Markle.
This year will mark the monarch's 92nd birthday, and although there's still a lot of time until her birthday rolls around, it's never too early to take a look back at some of the most memorable moments from her life:
1927
One-year-old Elizabeth makes one of her first appearances on the Buckingham Palace Balcony.
1930
The future queen is pictured arriving at Olympia for the annual Royal Tournament.
1933
Elizabeth poses beside her younger sister, Margaret, who was born three years prior.
1937
The then-princess stands beside her mother on the Buckingham Palace balcony after the coronation of her father as King George VI.
1940
The future queen was just 14-years-old when she delivered one of her first public addresses.
1942
Elizabeth became a Girl Guide in 1937, and during the World War, she was tasked with boosting public morale.
1945
Elizabeth joined the Auxiliary Territorial Service (ATS) in 1945, and trained for weeks to polish her basic motor mechanic skills and learn how to drive a truck.
1947
On November 20, 1947, she married Prince Philip of Greece.
1948
The royal couple welcomed their first child, Prince Charles.
1950
Princess Anne was born two years later in 1950.
1953
Although she became queen a year prior, the official coronation didn't take place until June 1953.
1957
Elizabeth delivered her first televised Christmas speech from Sandringham House.
1960
Prince Andrew was the first child in 103 years to be born to a reigning monarch. The Queen's youngest child, Prince Edward, was born four years later.
1965
The family is pictured in the gardens of Frogmore House, Windsor on Elizabeth's 39th birthday.
1969
Prince Charles was given the title of the Prince of Wales by his mother.
1977
The Queen celebrated her 25th year on the throne by embarking on a U.K. tour.
1984
The Queen, along with her immediate family pose for a photo after Prince Harry's christening.
1997
The Queen mourns her former daughter-in-law, Diana's, sudden death.
2000
The Queen and her mother pictured shortly before she passed away.
2005
Her Majesty attends Prince Charles and Camilla's wedding.
2011
The Queen joins Prince William and Kate Middleton on the Palace balcony on their wedding day.
2013
The family poses for an official photo after Prince George's christening.
2015
The family once again got together for a snap to commemorate Princess Charlotte's christening.
2016
The Queen took a photo with her great-grandchildren and youngest grandchildren to mark her 90th birthday.
2017
The monarch and her husband mark their 70th wedding anniversary by releasing a series of portraits.
