- For more than a century, members of the British royal family have sent Christmas cards to their subjects.
- Images used on the cards show historic events or intimate moments between the royals.
- This year, Prince William and Kate Middleton's card shows a family photo of their trip to Jordan.
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1914: King George V and his wife, Mary, sent these stoic portraits to British troops to send their "best wishes for Christmas."
This postcard was sent to the British troops in 1914, when World War I was underway.
"May God protect you and bring you home safe," the card reads.
1942: A decade before she would become their queen, Princess Elizabeth sent this card to members of the British Army.
The 16-year-old princess sent this card to the Grenadier Guards regiment of the British Army.
Ten years later, her father, King George VI, passed away and she took over the throne.
1954: The image selected for the royal family's 1954 Christmas card showed the Queen, Prince Philip, Prince Charles, and Princess Anne.
The photo shows them on the balcony of Buckingham Palace.
1968: A few years later, the Queen and Prince Philip shared another charming family photo.
In 1968, the royal family let cameras film their life at home, in a bid to modernize their image. The documentary was broadcast the following year.
1971: Another family portrait was shared on the 1971 holiday greeting.
At the time of this photograph, Charles was 23 and had graduated from the University of Cambridge a year prior. Anne was 21, Andrew was 11, and Edward was 7.
1976: An image from this photo shoot was used on the card and shows the growing royal family.
This image, which was taken in Bromont, Canada, includes Princess Anne's husband of three years, Mark Phillips, who stands behind Prince Edward.
1978: The Queen featured her beloved corgis.
The Queen has had more than 30 corgis since 1945.
1979: They selected a more posed family photo for their Christmas card in 1979.
Taken at Balmoral Castle, this image shows Queen Elizabeth with her husband and their children. Look closely and just behind Prince Edward's leg, you'll see Princess Anne's 2-year-old son, Peter Phillips, in the left of the photo.
1981: On her Christmas card, the Queen celebrated the wedding of her oldest son, Prince Charles, to Diana Spencer.
The couple married in July 1981, when Charles was 32 and Diana was 20.
1987: Princess Diana and Prince Charles shared a family portrait.
The card was signed by Charles and Diana. By this time, they had been married for six years.
1987: Photographer Yousuf Karsh stands next to this portrait of the Queen and her grandchildren. The image appeared on their 1987 Christmas card.
The portrait shows the Queen and the Duke of Edinburgh with their grandchildren — William, Harry, Peter Phillips, and Zara Phillips — at Balmoral in 1987.
Karsh posed alongside the photo in 1988, during the preview of his 80th birthday exhibition at the Barbican Art Gallery in London.
1988: Charles and Diana are pictured with their growing boys.
Prince William was 6, and Prince Harry was 4.
1994: A card shows Prince Charles, who separated from Diana in 1992, with their two sons.
Diana and Charles separated in 1992 but divorced in 1996.
This card, which was signed by Prince Charles, was among a series of royal Christmas cards that went up for auction at Rowley's auction house in Ely, Cambridgeshire, in the UK earlier this month.
1998: A Christmas card sent to an employee of the Queen's Sandringham Estate shows the monarch with her children and grandchildren.
This card, which was sent to an unidentified worker and signed by the Queen and Prince Philip, was also part of the December 12 auction. Money was raised for the Norfolk Hospice in King's Lynn, which is just a few miles from the Queen's Sandringham Estate.
1999: The following year, the Queen sent a card featuring her mother.
The card, which is also among those up for auction, shows the Queen Mother, who turned 99 in 1999. She died three years later, before her 102nd birthday.
1999: Prince Charles put his arms around his sons in this photo on the front of his 1999 Christmas card.
The princes' mother had passed away two years prior.
2000: The following year, the three princes looked smart on the front of their Christmas card.
This card was also among those up for auction this month.
2003: Prince Charles' card from 2003 shows a sweet moment with his sons.
Prince William was 21, while Prince Harry was 19.
2005: Prince Charles and his new wife, Camilla, shared this image from their wedding day for their Christmas card.
As well as Prince William and Prince Harry, the photo shows Camilla's children, Laura and Tom Parker Bowles. This was the first time Camilla had appeared on Charles' Christmas card, despite their years-long relationship.
2006: The Queen and her husband shared a more traditional photo.
The Queen turned 80 in 2006, and she celebrated with a number of public and private events at Buckingham Palace and Windsor Castle. The Queen's actual birthday is April 21, but her "official" birthday is the second Saturday in June, when the weather is likely to be better for celebrations.
2007: The Queen and her husband shared two photos on their Christmas card this year. First, a photo of the couple with their grandchildren.
Prince Harry, Prince William, and Peter Phillips (the son of Princess Anne) are seen in the back row. At the front, from left to right, stand Princess Beatrice, Princess Eugenie, Prince Philip, Queen Elizabeth II, Lady Louise Windsor, and Zara Phillips.
2007: On the other side of the card, the Queen and Prince Philip were pictured with their children and their spouses.
As well as the Queen's children, the card shows Charles' wife, Camilla Parker-Bowles, Anne's husband, Timothy Laurence, and Edward's wife, Sophie Wessex. This card was also part of Rowley's December 2020 auction.
2012: Prince Charles and Camilla's holiday card featured a photograph taken during the Queen's Diamond Jubilee.
The celebrations marked the 60th anniversary of the accession of Charles' mother, Queen Elizabeth II.
2012: The Duke of Edinburgh is seen presenting his wife with a trophy after her horse won the Queen's Vase at Royal Ascot in June 2012.
Her horse, Estimate, won easily.
2013: Prince Charles and his wife giggled together in the photo on their Christmas card.
The photo shows the couple in the Royal Box during the races at Royal Ascot, one of Britain's best known racecourses, on June 19, 2013.
2014: The following year, they shared a similarly happy photograph.
In the photo, they are seen laughing during the Invictus Games Opening Ceremony in London on September 10, 2014.
The Invictus Games were launched that year by Prince Charles' son, Prince Harry.
2015: Prince Charles and Camilla look at ease in this image taken in Scotland during their summer vacation.
The photo, which was released a week before Christmas, was taken on a private estate in August by a friend, according to Clarence House.
2015: Prince William and Kate Middleton looked similarly content in their family portrait.
The portrait was taken at Kensington Palace. It shows 2-year-old George giggling alongside his little sister, Charlotte, who was 5 months old at the time the photo was taken.
2016: Prince Charles and Camilla celebrated their tour of Croatia with their 2016 holiday card.
During the trip, they met performers wearing traditional dress in Tvrda.
2016: Princess Charlotte and Prince George were mesmerized by an entertainer during the family's tour of Canada.
This sweet family moment graced the front of their Christmas thank-you cards, which were received in January 2017.
2017: The Queen's card showed her feeding a banana to an elephant named Donna alongside Prince Philip.
The photo was taken during the royal couple's trip to Whipsnade Zoo, where the Queen opened a new Centre for Elephant Care in April 2017.
2017: The Duke and Duchess of Cornwall shared a photo from Camilla's private 70th birthday party.
The celebrations were held in Highgrove House, their private family residence in Gloucestershire, in July 2017.
2017: William and Kate also shared a more formal portrait.
The photograph shows the family at Kensington Palace. It was taken by Getty photographer Chris Jackson, who takes many of the personal photos released by the royal family.
2018: Prince Charles and Camilla featured another sweet photo on their Christmas card.
The photo was taken during the summer in the garden of Clarence House.
2018: Prince Louis made his first Christmas card appearance in this relaxed family portrait.
This relaxed family portrait was taken at Anmer Hall. The property, which is on the royal family's Sandringham estate in Norfolk, was given to the couple as a wedding gift.
Prince Louis was born in April 2018. His big brother is 5 in this photo, while his big sister is 3.
2018: Prince Harry and Meghan Markle shared this elegant black-and-white photo on their Christmas card.
The Duke and Duchess of Sussex chose a photo from their wedding night for the front of their holiday card. It shows them watching fireworks on the grounds of Frogmore House, where their evening reception was held in May 2018.
2019: Prince Charles and Camilla celebrated their historic trip to Cuba.
They became the first British royals to ever visit Cuba in March 2019. In the photo, they're driving a vintage MG TD at the British Classic Car event in Havana.
2020: For Prince William and Kate Middleton's official Christmas card, they shared a photo of their family taken outside their home in Norfolk, England.
The photo shows the Duke and Duchess of Cambridge with their three children outside Anmer Hall earlier this year. As Insider's Mikhaila Friel noted, Princess Charlotte resembles a young Prince William in the photo.