“Thank you for all of the love, prayers, and warm wishes for our sweet boy. He’s six!” the duchess added, before asking a question all parents can relate to. “Where did the time go?” Before signing off, Meghan thanked everyone who attended Archie’s birthday celebration.

Prince Harry and Meghan Markle's son Prince Archie has just turned six and there was a special party to celebrate – but was the top-secret event hosted at the family's epic Montecito home?