Prince Harry is extremely fond of his great-grandfather and is expected to attend Royal Family celebrations with both Meghan and Archie in tow.
Prince William, 38, and Kate, Duchess of Cambridge, 39, are also likely to attend the Duke’s birthday celebrations with George, Charlotte and Louis.
But given Prince Philip’s discreet nature, the Cambridges and Sussexes are unlikely to be seen out in public together until the Queen’s official birthday celebrations several days later.
The Queen’s official birthday parade is due to go ahead in London on June 12.