The pair last attended the event in June 2019, the year before they stepped down as working royals and moved to the US.
The 2019 event also marked the last time that Meghan and Harry appeared on the Buckingham Palace balony for the RAF Flypast.
The Princess of Wales made her royal return at this year’s event on June 15 – her first public appearance of the year. The mother-of-three also made her first appearance alongside her children, Prince George, 10, Princess Charlotte, 9, and Prince Louis, 6 – who had also not been pictured since December 2023.
In March, Princess Kate revealed that she was undergoing treatment following a shock cancer diagnosis earlier this year.
Just weeks before Kate revealed that she had been diagnosed, King Charles had revealed his own diagnosis.

Meghan and Harry now reside in California with their two children, Prince Archie, five, and Princess Lilibet, three.
The Duke has made numerous visits to the UK in the past four years, whereas Meghan has not visited since 2022.
Harry’s last visit to the UK took place in May, a visit which marked the 10th anniversary of the Invictus Games in London.
Meghan made the decision to not travel to the UK with her husband, with the mother-of-two remaining in the US with Archie and Lilibet.