The Princess of Wales is hosting her annual Christmas carol concert at the iconic London venue, with guests including dignitaries, stars, and everyday helpers who have made a difference in their neighbourhoods.
The 1,600 guests will enjoy a blend of carols, music and readings from performers including Kate Winslet and Chiwetel Ejiofor.
The central message of the concert, held in the candle-lit Abbey on the afternoon, is compassion and demonstrating care for others.
Attending the event are Anna and Jonathan Cordiner, whose daughter died of a tumour, and who founded an organisation, a support fund, to help households where there is a child with a terminal illness.
"Your efforts, love, and understanding, often discreetly and without words, and without any expectation or recognition, make an remarkable change to the well-being of people," Her Royal Highness stated in a message before the concert.
The princess has been making her own gradual return to the public eye subsequent to her illness and medical care, last month delivering her major oration since 2023, in which she reflected on recognising the "discreet, frequently unseen labour of caregivers".
Guests arriving at the Abbey can listen to budding artists supported by the Future Talent charity, co-founded by the former royal to broaden opportunities for musical tuition.
An 18-year-old named Carys Wood, who is a trumpet player and is from Pembrokeshire, has been assisted by the charity, with grants helping towards musical instruments, lessons and travel costs - and she said it was "awesome" to be playing at the evening's event.
"Music can be very expensive," the musician remarked. She is now enrolled at the renowned conservatoire, and added that "everyone should have the opportunity" to develop their musical skills.
Eliza, Carys's sister who is 11, who is a euphonium player, will be present at the Abbey. "I never imagined I would perform in front of so many important people," she said.
Within the audience will be people from various age groups.
That will encompass nine-year-old Saphia Turner, honouree of a youth community award, who produces drawings and undertakes charity feats to raise money for local food charities.
The Abbey has been decorated with custom-created holiday decorations, with well-known chef Mary Berry and flower expert Simon Lycett helping to make them.
The musical lineup includes Katie Melua, the Westminster Abbey choristers and a nautical singing ensemble, the group Fisherman's Friends, who said the opportunity to perform was "the perfect culmination."
This annual carol service will be broadcast on a major network on Christmas Eve.