Prince Harry and Meghan have made their first public appearance with Prince William and Kate since opening up about their struggles in a revealing TV documentary.
While the Duchess of Cambridge and Camilla, Duchess of Cornwall, stood beside the monarch, the Duchess of Sussex joined Sophie, Countess of Wessex, on a separate balcony to watch the memorial service in London this morning.
Serena Williams has been friends with Meghan, the Duchess of Sussex for years.
The pair have also leaned on each other in hard times; earlier this year, it was reported Meghan had been going to Williams for support amid an onslaught of nasty comments on the Sussexes' social media pages. The royal couples are also expected to attend the annual Remembrance Day Service at The Cenotaph on Remembrance Sunday.
This year's event marked 75 years since the battles of 1944, including Monte Cassino, Kohima and Imphal, D-Day and the collaboration of Commonwealth and Allied forces.
The Festival of Remembrance is an important event for the royal family, during which they commemorate all those who have lost their lives in conflicts.
It also celebrates the 100th anniversary of the Government Communications Headquarters and pay tribute to RFA Mounts Bay which delivered supplies and aid to the Bahamas after Hurricane Dorian this year.
Prince Harry, Meghan Markle, Prince William and Kate Middleton had a Fab-Four reunion at the annual Royal British Legion Festival of Remembrance in London. Ahead, see more photos of her full outfit.
"But look, we're brothers".
But another told how Prince William was "furious" with Harry for giving the interview and had told him so.
"Just as I said, as brothers, you know, you have good days, you have bad days".