Kate, Princess of Wales has shared a special message to "shine a spotlight" on parents and carers before the Royal Carols: Together At Christmas service at Westminster Abbey.
The video message was recorded last month during the final preparations for the service.
During her introduction, the princess explained that this year’s carol service has been dedicated to all those who support children, and the crucial role they play in society.
Kate 'shines spotlight' on parents and carers before glitzy carol concert
ITV
In a special introduction for the concert, Kate said: "Welcome to our third carol service at Westminster Abbey. Christmas is a time when we come together and celebrate the birth of a newborn baby.
"The arrival of every baby is a precious and momentous time, it brings us together to reflect on new beginnings and brings hope for the future.
"Throughout our earliest interactions, relationships and experiences, with those who love us, even before we are born, we lay the foundations to so much of what that future will depend on.
"But only by valuing and supporting the vital role of the adults in a child's world can we hope to make a difference.
Kate taking her family to the glitzy carol concert
PA
"And so tonight's guests have been invited in recognition of their support of our youngest children, as we shine a spotlight on the critical role they play in nurturing and raising the future generation.
"From parents and carers, to early educators, midwives, health visitors and community volunteers, thank you for all you do in helping the very youngest members of our communities, feel safe, valued and loved.
"This is not just making a difference to children today, it will go on to shape a happier, healthier, fairer world in the future. I do hope you enjoy this evening and I wish you all a very Merry Christmas."
The service featured musical performances by the Westminster Abbey choir, Freya Ridings and James Bay, and a duet from Beverley Knight and Adam Lambert.
Kate wore a gorgeous white trouser suit to the concert
PA
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PAJacob Collier performed a rendition of Last Christmas John Lennon’s piano, loaned for the service by George Michael’s estate.
The performance was introduced by Roman Kemp, a godson to the late George Michael.
Readings were delivered by Prince William, Micheal Ward, Emma Willis and Jim Broadbent.
A specially commissioned poem written by Joseph Coelho, the Children’s Laureate, was also read by Leonie Elliott. The concert will air on Christmas Eve on ITV1 and ITVX on Christmas Eve.