The Duke of Kent attended the 2013 ceremony with her since Prince Philip — who died on April 9 at 99 years old — was recovering from surgery.
For the second year in a row, the event will look a lot different. "Following consultation with Government and other relevant parties it has been agreed that The Queen’s Official Birthday Parade, also known as Trooping the Colour, will not go ahead this year in its traditional form in central London. Options for an alternative Parade, in the quadrangle at Windsor Castle, are being considered," Buckingham Palace said earlier this year.
Going forward, the Queen will most likely travel to Cornwall to attend the G7 Summit and meet President Joe Biden.
The 95-year-old matriarch will most likely be joined by her son, Prince Charles, Camilla, Duchess of Cornwall, Prince William and Kate Middleton, the outlet reported.
On May 11, Prince Charles and Camilla accompanied the Queen to the State Opening of Parliament.
It looks like Charles — who will be King after Queen Elizabeth is gone — will have more of a role ever since his father passed away.
“There will be a visible show of support for the Queen from senior members of the family at future events, and the opening of Parliament is no exception," a source said. "The Queen has been incredibly stoic throughout the last few weeks, but the family are determined to rally round and support her. Charles will be at the forefront of those efforts as heir."
However, Queen Elizabeth is not giving up the throne just yet. "She understands that she has a job to do, and [Philip] would have wanted her to crack on. She did do so when he retired from public life," a former royal aide spilled to PEOPLE. "She will never abdicate because of duty and honor and public service is so deep in her, as it was for him."