The Royal Family Twitter account represents the Queen and all the senior royals who don’t have their own social media account – such as Princess Anne and Sophie, Countess of Wessex.
The tweet came one week after the end of the royal period of mourning in the wake of the death of Prince Philip.
Following the poignant funeral of the Duke of Edinburgh on April 17, the Queen resumed royal engagements on Tuesday, when she held two virtual audiences.
Earlier this week, Kate and William posed for photographer Chris Floyd, who took two stunning portraits of the couple.
One is reminiscent of Kate and William’s engagement picture, with the Duchess leaning on William’s shoulder and her ring in full display.
The second picture shows the Duke looking lovingly at his wife of 10 years as she smiles.
Kate and Prince William tied the knot at Westminster Abbey in front of thousands of guests and millions of viewers around the world.
This week, the Duke and Duchess of Cambridge marked their milestone wedding anniversary also by paying visit to a few of the charities that benefitted from their wedding gift fund.
On Tuesday, Kate and William visited Manor Farm, a farm in County Durham raising cattle, sheep and arable.
Its owners showed to be mindful of sustainable farming as they showed the Duke and Duchess around, speaking about the tools they use to support productivity and sustainability.
The couple then met local farmers supported by the National Farmers’ Union and heard the impact the coronavirus pandemic is having on their lives and work.
Among the topics they touched upon there were mental health and juggling between childcare and farming.
They also discussed how the farming industry is improving its environmental impact.
Later, they witnessed the work done by the Cheesy Waffles Project, an initiative supported by the organisation The Key which helps young people and adults with additional needs.
There, Kate and William met Evan Jones and Lee Middleton, two young people who achieved their Duke of Edinburgh Awards.
In a sweet tribute to his grandfather, Prince William told the youngster Prince Philip would be “so pleased you got your awards.”
The Key, known as Keyfund in 2011, received £33,000 from the wedding gift fund, which helped the charity taking on an extra member of staff and work with people outside the region.
The Royal Wedding Charitable Gift Fund in 2011 was set up in the run-up to the wedding by Kate and William, who invited people who wanted to buy them a present to donate money to charities instead.
In total, more than £1million was raised by the fund – including £559,104 donated by the members of the public.