Queen Elizabeth II celebrated her 92nd birthday with a Saturday night concert in London featuring British singers such as Sting, Tom Jones and Jamie Cullum.
Kylie Minogue, Shaggy and Craig David also were set to perform for the Queen's Birthday Party at Royal Albert Hall.
Elizabeth - the world's longest-reigning living monarch - attended the show with other members of the royal family.
Flanked by Prince Charles and Prince William - first and second in line for the throne - she waved to the crowd as she took her seat. The audience sang 'Happy Birthday' when the Queen went on stage toward the end of the programme.
Prince Harry, with fiancée Meghan Markle as his concert date, led the tributes to his grandmother.
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Earlier in the day, honorary gun salutes were staged at Hyde Park, the Tower of London, a castle in Wales and the town of Windsor to mark the occasion.
The Queen celebrates two birthdays every year: Her actual birthday on April 21, which she usually marks privately with her family, and her official birthday in the summer. That usually falls on the second Saturday in June, when she joins the Trooping the Colour military parade in central London.
Elizabeth's official birthday this year came on the tails of the Commonwealth Heads of Government meeting, which brought the leaders of the 53 Commonwealth countries together in England.
The Queen has led the disparate group, made up of Britain and its former colonies, since she took the throne in 1952.