Queen Elizabeth's Platinum Jubilee -- honoring her 70 years on the throne -- is officially underway with the royal family, and that includes Prince Harry and Meghan Markle ... although they're not exactly in the Queen's spotlight.
The 4-day celebration kicked off with a military parade in front of Buckingham Palace. The display is called "Trooping the Colour" -- it formally honors the Queen's birthday -- and QE2 was out on her balcony taking in all the action.
They're watching from the Major General Office ... along with several of the Queen's other grand and great-grandchildren -- such as Princess Beatrice and Princess Eugenie.
You can see in the pics, Meghan's charming some of the younger royals. It's kinda cute -- think of it as the kids' table at your Thanksgiving dinner ... and Harry and Meghan are definitely holding court.