Prince Harry took to the stage to wish his grandmother a happy birthday, saying: "Tonight we are celebrating the Queen's Birthday but Your Majesty, if you do not mind me saying, you are not someone who is easy to buy gifts for".
Since acceding to the throne in 1952, she has served with grace and strength.
The concert was attended by Prince Charles and Prince William, as well as Prince Harry and his fiancee Meghan Markle, who will marry next month. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed. Prince Harry and Meghan Markle seemed to be delighted though, but maybe that's just the almost-married glow.
Watch the performance, along with an ensemble rendition of Louis Armstrong's "What A Wonderful World", capped with a grand stage entrance by the Queen, followed by the audience thrice chanting "hip-hip-hooray" in her honor, below.
The couple, who will Wednesday on May 19, looked happily in love at the event.
Prince William's wife Kate, the Duchess of Cambridge, did not attend.
She still carries out official engagements, but her husband Prince Philip, who spent 10 days in hospital this month for a hip replacement, retired from public life previous year. He is recovering from hip replacement surgery.
The performers sang songs from different eras.
But the concert came at the end of a week that saw Prince Charles approved as her successor as head of the Commonwealth at the end of the Commonwealth Heads of Government Meeting.
Admittedly, he is 69 years old himself and perfectly capable of embarrassing his own children, you'd imagine, but The Queen rolled her eyes and tutted at him when he referred to her as "Your Majesty" and - even worse - "Mummy" at the monarch's 92nd birthday celebrations.
As is customary with monarch's birthdays, soldiers from the King's Troop Royal Horse Artillery and the Honorable Artillery Company fired gun salutes in London's Hyde Park and the Tower of London earlier on Saturday.
This story has been corrected to show that Saturday was the queen's actual birthday, not the "official" birthday she observes in June. The queen acknowledged them with a smile and her trademark royal wave.