This is the first time since July 2019 (attended a polo match) that the two couples have reunited!
The reason has nothing to do with rumours of an ongoing feud between the two.
The current hierarchy lists the Queen first, followed by Prince Philip (who did not attend).
There was a cute snap of the pair gazing lovingly at each other, as well as an adorable picture of the Queen grinning and a third picture of members of the Royal Family in their box at the service.
Last year, Meghan wasn't joined by any of the royals and stood next to German president Frank-Walter Steinmeier's wife Elke Budenbender. He retired from public duties in 2017. Meanwhile, Kate watched with Camilla and Queen Elizabeth on a nearby perch.
Meghan was joined by the Countess of Wessex and Sir Timothy Laurence on another balcony.
On Sunday, Meghan, who a year ago stood next to Elke Büdenbender, the wife of Germany's President Frank-Walter Steinmeier, was joined by the Countess of Wessex and Sir Timothy Laurence on one balcony.
Meghan, Harry, Kate and William will spend a major part of the weekend together.
However, on Sunday, royal watchers begin to question a return of their rift when Meghan and Kate stood on separate balconies during Sunday's Remembrance Day ceremony.
The Duchess of Sussex and the Countess of Wessex Cenotaph in Whitehall on Sunday.
The Duke and Duchess of Sussex paid a surprise visit to British Army wives at a Windsor, UK event on Wednesday, and bonded with military families. After the service, Andrew took the Salute at the March Past of Veteran Organisations on Horse Guards Parade.
The seating arrangement is exactly the same as last year's plan, with Queen Elizabeth II in the middle with the rest of the family sitting around her based on hierarchy.
Royal well-wishers may start bracing for another round of baby news as Prince Harry and Meghan Markle have apparently displayed some interest in having a second child.