The monarch has opened up the grounds of her London home to the public for four days as part of a festival to celebrate the 60th anniversary of the Queen’s Coronation
And Thursday night saw an evening gala, which featured performances from singers, bands and ballet dancers.
Katherine Jenkins was one of the few lucky performers invited to sing inside the grounds of Buckingham Palace for a special gala concert.
Katherine with her glittering purple gown, and wore £2million worth of Boodles diamonds and her blonde hair styled in soft waves.
Katherine changed into an off-the-shoulder green number as she sang during the finale with Welsh choir Only Boys Aloud and also enjoyed a dance with the orchestra’s conductor Anthony Inglis.
Representing the Royal Family alongside the Queen was Prince Charles, Camilla Duchess Of Cornwall, Sophie Wessex and Princess Eugenie.
Also in attendance was the Duchess of Cambridge’s younger siblings James and Pippa Middleton with their father Michael and mother Carole.
A highlight of the evening was the performance of a moving song which producer Mike Batt wrote in tribute to the Queen but in memory of his mother who died a few weeks ago.
Speaking about the specially commissioned piece that was performed by Katie Melua accompanied by the National Youth Orchestra, he said: “It was such a personal song I had to go into the room where I have my little piano.
“It happened on a day when my mum was upstairs in bed and I was writing this song and the idea just came to me and quite honestly it’s one of the most emotional experiences I’ve ever had.