Meghan Markle and Prince Harry have made a number of changes to the way they do their royal business in the past year.
One such change was the opening of their own Instagram account.
The couple have 8.7 million followers on the platform, @sussexroyal.
They use it to update followers on their lives and their charity projects.
Meghan Markle news: Did Harry’s wife snub Prince William on Instagram?
The most recent post is a sweet snap of Archie in Prince Harry’s arms, celebrating his first Father’s Day.
The couple have also used the account to congratulate other royals on their birthdays. On the Queen’s birthday they wrote: “Happy Birthday Your Majesty, Ma’am, Granny. Wishing you the most wonderful day.”
For Prince Philips birthday they wrote a similar message: “Wishing His Royal Highness The Duke of Edinburgh, Sir, Grandpa a very Happy 98th Birthday!”
However, eagle-eyed fans noticed the couple did not post a special message for Prince William’s birthday last week.
A royal expert has blasted the move, calling it “pretty rude”.
The editor in chief at Majesty Magazine Ingrid Seward said: “I think it’s a snub if they don’t leave one for Prince William as they did for the Duke and for the Queen.”