Kate will say Christmas “will feel very different this year”, as she spearheads the first event since the monarch’s death.
Dedicating her Royal Carols: Together at Christmas event to her husband Prince William’s late grandmother, she honours Elizabeth’s belief that the season brings people together.
Kate’s second annual service at Westminster Abbey is to be shown on ITV tomorrow, narrated by Catherine Zeta-Jones, at 7pm.
The 40-year-old said the Queen always prioritised “recognising and thanking those who have gone above and beyond to support others”.
She added: “Her Majesty leaves with us an incredible legacy and one that has deeply inspired many of us. This year’s carol service is dedicated to her and to all those who are sadly no longer with us.
“So, whilst Christmas will feel very different this year, we can still remember the memories and traditions we shared.
“Take time to slow down and celebrate with family and friends all the wonderful things that make Christmas so special.”
The mum of three attended the Abbey last week with William, 40, their eldest children Prince George, nine, and Princess Charlotte, seven, as well as King Charles and Queen Camilla.
They presented a united front, in the face of allegations about the Royal Household in a Netflix documentary about Prince Harry and his wife Meghan Markle.
Music was provided by the Westminster Abbey choir, Craig David, Alexis Ffrench, Alfie Boe and Mel C, while there were also readings by William, Hugh Bonneville, Dame Kristin Scott Thomas and Nicola Adams.
Special guests included Inna Hryhorovych, headmistress at St Mary’s, London’s biggest Ukrainian school.
Inna, who has helped hundreds of refugee children fleeing Putin’s war, was invited to bring the school choir along to sing a carol.
In an extra special touch, a Christmas tree in the Abbey was covered in small Paddington Bear decorations – a nod to the late Queen’s famous Jubilee sketch.