Catherine, Princess of Wales, is presiding over her annual festive musical service at Westminster Abbey, with guests including dignitaries, stars, and everyday helpers who have supported their local areas.
The sizable congregation will listen to a blend of festive songs, musical performances, and spoken word pieces from stars like Kate Winslet and Chiwetel Ejiofor.
The theme of the event, held in the glowing Westminster Abbey on the afternoon, is generosity and expressing affection towards one's neighbour.
Among the guests will be Jonathan and Anna Cordiner, whose child passed away from a tumour, and who set up a charity, a charity called Kayleigh's Wee Stars, to support families who have a youngster facing a life-limiting condition.
"The dedication, empathy, and kindness you show, often discreetly and without words, and without any thought of thanks or praise, make an profound impact to the lives of others," the Princess expressed in a letter ahead of the festive gathering.
The royal has been undertaking her own measured re-emergence to official duties following her health challenges and treatment, in November making her first public speech for two years, in which she discussed recognising the "discreet, frequently unseen labour of caregivers".
Attendees entering the Abbey can listen to young musicians backed by the Future Talent organisation, established in part by the late Duchess of Kent to broaden opportunities for instrumental training.
An 18-year-old named Carys Wood, who plays the trumpet and is from Pembrokeshire, has been supported by the trust, with grants helping towards equipment, teaching, and travel fees - and she said it was "amazing" to be playing at the evening's event.
"Pursuing music is often costly," she stated. She is now a student at the Royal Academy of Music, and added that "each individual ought to be given the possibility" to hone their artistic talents.
Her younger sibling Eliza, aged 11, who plays the euphonium, will also be at the Abbey. "It's unbelievable that I get to perform here in front of so many distinguished guests," she said.
Within the audience will be representatives of different generations.
That will feature nine-year-old Saphia Turner, honouree of a young hero award, who sells artwork and carries out sponsored challenges to raise money for local food charities.
The Abbey has been festooned with handcrafted festive wreaths, with celebrity baker Mary Berry and floral designer Simon Lycett contributing to their design.
The musical lineup includes Katie Melua, the Abbey's own choir and a Cornish sea shanty group, the Fisherman's Friends, who said the invitation to sing was "the perfect culmination."
This annual carol service will be broadcast on a major network on Christmas Eve.
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