Watch: Happy Birthday, Prince Harry! Did you know THIS about him?
The Queen, the Duke and Duchess of Cambridge, Prince Charles and the Duchess of Cornwall were among the royals to mark Prince Harry's 37th birthday with a public message.
It has become custom over the years for the royals to use their social media accounts to share throwback photos and sweet greetings to celebrate a family member's birthday.
And the congratulations messages for Prince Harry today (15 September) were no different.
Posting a selection of photos highlighting her grandson's charity efforts while he was a working royal, the Queen posted a simple message wishing Prince Harry a happy birthday, via the @RoyalFamily Twitter account, which represents the Queen and all the senior royals who don't have their own social media handles.
The tweet read: "Wishing The Duke of Sussex a happy birthday today!"
The simple message was accompanied by a collage of pictures of Prince Harry carrying out royal duties, including one image with his wife Meghan Markle.
Wishing The Duke of Sussex a happy birthday today! 🎈 pic.twitter.com/W1MJC9cGBn
— The Royal Family (@RoyalFamily) September 15, 2021
In the other images, Prince Harry can be seen carrying out public duties – in one, he is high-fiving a young boy planting a tree in Botswana, and in another he looks happy and relaxed as he listens to members of the public speak.
Happy Birthday Prince Harry! 🎈 pic.twitter.com/Lw1nR9wNDl
— The Duke and Duchess of Cambridge (@KensingtonRoyal) September 15, 2021
The Queen's message via Twitter was quickly followed by birthday wishes from the two other main royal households - Kensington Palace and Clarence House.
Via their Kensington Palace Twitter handle the Duke and Duchess of Cambridge wrote: "Happy Birthday Prince Harry!"
The simple tweet was accompanied by a red balloon emoji.
The couple added a single picture of Prince Harry taken in January 2020, when he hosted the Rugby League World Cup 2021 draw at Buckingham Palace.
Wishing The Duke of Sussex a very Happy Birthday today! 🎂 pic.twitter.com/rGhu2BtsX3
— The Prince of Wales and The Duchess of Cornwall (@ClarenceHouse) September 15, 2021
Meanwhile the Duke's father Prince Charles and the Duchess of Cornwall shared three photos of Prince Harry at past royal engagements, on their Clarence House twitter account.
Along with the images, the message to the Duke read: "Wishing The Duke of Sussex a very Happy Birthday today", followed by a cake emoji.
Unlike the other birthday tweets, it included two images of the Prince of Wales and Harry together, one of which was a throwback snapshot from Harry's childhood.
The other was taken in 2014, during the opening ceremony of the first-ever Invictus Games, and portrays Charles and Harry laughing together on the stands.
Watch: Prince Harry teams up with Jill Biden to host a Warrior Games event.
While it has become custom for members of the royal family to mark their birthdays with a charitable initiative or donation, Prince Harry hasn't yet shared plans with the public over how he will spend his birthday this year.
On his 36th birthday, he chose to support CAMFED, a charity that promotes girls’ education in Africa.
In order to mark her own 40th birthday, Meghan Markle released a video message with Melissa McCarthy to encourage women to support one another back into the workforce after the coronavirus pandemic.
The video, debuted on 4 August and was released on Harry and Meghan's Archewell website.
The project, named 40x40, encourages people from around the world to donate 40 minutes of their time to help women get back into work.
“Because I’m turning 40 I’m asking 40 friends to donate 40 minutes of their time to help mentor a woman who is mobilising back into the workforce,” the Duchess said in the video.
The Queen also led birthday messages from the Royal Family to celebrate her granddaughter-in-law Meghan Markle's milestone birthday.
The Queen's official Twitter account shared pictures of Meghan and wished her a happy birthday.
Harry and Meghan moved to the US after stepping back from royal duties in March 2020, and currently reside in Montecito, Santa Barbara, with their children, two-year-old Archie and three-month-old Lilibet.