Prince Archie is turning four on the same day as King Charles' Coronation - but that won't stop the youngster getting all the attention on his big day.
Due to their ages, the young prince and sister Princess Lilibet, one, will not be attending the historic occasion at Westminster Abbey on May 6.
While Prince Harry flies back to the UK to watch his father being crowned, his kids will stay at home in California to enjoy celebrations with mum Meghan Markle.
It will be a very different story Stateside to the pomp and ceremony of the Coronation, as Archie will be having an "intimate" birthday party.
While it's likely that the Sussexes will pay tribute to the birthday boy and release a new photo, we have absolutely no idea how the rest of the Royal Family will mark the occasion.
Archie's party and Harry's dash home
People around the world will be celebrating the Coronation, but only a small group will be at Archie's intimate party.
Harry is only going to the Coronation ceremony itself at 11am before jetting back to the US on a commercial flight so he can spend time with his son.
A source close to the family has said Meghan's mother Doria Ragland will be at the bash, along with Archie's pre-school friends and some celebrity pals of the couple.
Among the celeb guests who may rock up are chat show legend Oprah Winfrey, tennis ace Serena Williams, presenter Ellen DeGeneres and her wife Portia de Rossi.
"Harry's going to make every effort to get back in time for Archie's birthday," the insider told Page Six.
"It's going to be an intimate party, it's not going to be like 'My Super Sweet 16' or Portia de Rossi's 50th!"
There will be lots of fun to be had for the kids as the Sussex's grounds extend to a whopping seven acres - and has a playground complete with two slides, climbing frame, tightrope, helter skelter, and two types of climbing wall.
Meghan loves baking at home with Archie, so will no doubt be planning a big cake for her son to enjoy, perhaps even using lemons plucked from their own garden.
Upstaging Charles
There are rumoured fears that the Sussexes could "upstage" Charles' historic day by going large on the celebrations.
Royal columnist Lee Cohen has claimed Harry and Meghan could risk overshadowing his dad's big moment, including the release of a birthday announcement hours before the Coronation.
It is traditional for royal households to release photo portraits on a family member's birthday - with the Sussexes doing this on every previous occasion for their son.
Cohen told Express.co.uk : "It's terribly petty, but the Sussexes, who no longer have their royal platform, seem to relish any opportunity to attempt to upstage a royal occasion.
"It's not as if the Royal Family seek occasions to upstage the antics of the Sussexes, quite the opposite."
However, many people would love to see a new picture of the young prince - and it won't really have any major impact on the Coronation.
It is traditional for royal households to release photo portraits on a family member's birthday - with the Sussexes doing this on every previous occasion for their son.
According to the Mail, officials at the palace were left feeling uncomfortable last year because they didn't have an up-to-date picture of Archie to accompany his birthday messages on social media.
Instead they had to use photos from just after he was born or from his official christening.
A source said: "The truth is the Prince of Wales has barely seen his grandson twice since he was born. In fact every member of Harry’s family can easily count on one hand the number of times they saw Archie after he was born and before the family left the UK. It’s a very sad situation."
Family Zoom call
With relations between the Sussexes and the rest of the royals at an all-time low, and the fact they will all be at the Coronation, it seems doubtful that there will be a family video call.
In 2020, Archie did have a Zoom call with the late Queen, who wished her great-grandson a happy birthday when he turned two.
According to Vanity Fair, the call took place just before tea time when the Queen takes tea thanks to the eight-hour time difference.
"The Queen has had messages and calls from all her family which has made her day very special," a source said.
The Queen hadn't seen Archie in person for a year and was reportedly surprised by his 'distinct American accent'.
Sadly the Queen isn't around for Archie's birthday this year, and the rest of the royals might be a bit tied up.
Archie's previous birthdays
Archie's first birthday was a family affair, with Harry and Meghan celebrating at home with grandma Doria.
In an incredibly sweet snap, Archie can be seen in his high chair wearing a yellow party hat.
"They are celebrating as a family focused on Archie and being together," a source told PEOPLE at the time.
"They'll have a smash cake and Zooms with family and friends. It's been beautiful weather, so perhaps a family stroll with the dogs."
For Archie's second birthday in 2021, Meghan and Harry shared a new photo of their son on their Archewell Foundation website.
The little prince was holding a bouquet of birthday balloons - and it came with a request for fans to donate to COVID vaccine equity for vulnerable families around the world.
Last year, the Sussexes shared a brand new photo of Archie and he received birthday messages from the Royal Family.
On the official Royal Family Twitter account, a picture of Archie as a newborn with his parents and grandmother Doria meeting the Queen and the late Prince Philip was posted.
It was accompanied by the message: "Wishing Archie Mountbatten-Windsor a very happy 3rd Birthday!" It also featured a birthday cake emoji.
Meanwhile, William and Kate opted to share a family photo taken at Archie's christening, which also featured Charles, Camilla and two of the late Princess Diana's sisters.
Their message read: "Wishing Archie a very happy 3rd Birthday today" followed by a birthday cake and balloon emojis.
When it came to Archie's grandfather Charles, his Clarence House Twitter account shared the same picture posted by the Queen's account.
His message to his grandson read: "Happy Birthday Archie!"
Meghan's Coronation decision
Meghan could have watched the Coronation from a coveted seat inside Westminster Abbey.
But she made the decision to stay with the kids in California while Harry flies back to see his father being crowned.
According to insiders, Harry was cutely aware that the historic occasion will be "pretty much the most important day" of the King's life and knew he would regret not attending.
Therefore, it made sense that Meghan would stay in California while Harry attends the Coronation in the UK.
Royal editor Omid Scobie tweeted: "I understand that Archie's fourth birthday (also on May 6) played a factor in the couple's decision.
"Expect it to be a fairly quick trip to the UK for Prince Harry, who will only be attending the coronation ceremony at Westminster Abbey."
Despite being the grandchildren of the new King, it is believed that Archie and Lilibet were not invited, with sources citing that the children are "very young".
An insider told OK! that a major sticking point was how the Sussex children were to be included on the day.
But the source explained that their inclusion in the ceremony has "never been a bone of contention" because small children don’t attend royal events of this scale "due to restlessness and tantrums".
