In a heartfelt message, Kate Middleton extended warm wishes to those playing a "critical role" in "nurturing and raising the future generation."
"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," conveyed Kate in the recorded message.
The mother of three extended her appreciation to those involved in raising a child, acknowledging "parents and carers, early educators, midwives, health visitors, and community volunteers."
Having launched the Shaping Us campaign in January, the Princess of Wales has dedicated herself to the cause of early childhood development.
"Throughout our earliest interactions, relationships, and experiences, with those who love us, even before we are born, we lay the foundations for so much of what the future will depend on," she continued.
"But only by valuing and supporting the vital role of the adults in a child's world can we hope to make a difference."
The princess concluded her message by wishing everyone a "very merry Christmas."
This year's event boasts performances by Westminster Abbey's choir, along with Adam Lambert, Beverley Knight, Jacob Collier, Freya Ridings, and James Bay.