M?embers of the British royal family ¨C plus some other famous faces ¨C gathered at Westminster Abbey in London to mark the annual Commonwealth Day Service.
While key royals were missing, including King Charles and the Princess of Wales, due to ongoing health issues, several other senior royals stepped up in their place.
The event marked the 75th anniversary of the Commonwealth.
Read on to see all the best photos.
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Sophie, the Duchess of Edinburgh, looked impeccably chic in a grey coat and ivory hat.
A closer look at Sophie's coat, which she wore on top of a floral dress.
Sophie was joined by her husband, Prince Edward the Duke of Edinburgh, for the event.
Former Spice Girl Geri Halliwell attended the service at Westminster Abbey in this angelic white outfit.
The 51-year-old had spent the past few days at the F1 Grand Prix in Saudi Arabia with husband Christian Horner.
Halliwell, who always wears white to events, looked stunning in the cinched coat, which she dressed with a subtle headpiece.
Queen Camilla represented the monarchy in style with this stunning blue coat.
Camilla styled her sky-blue ensemble with a gorgeous sapphire brooch.
Birgitte, Duchess of Gloucester, also opted for a grey ensemble.
Princess Anne arrived in a red patterned coat.
Anne is one of the monarchy's most senior working royals right now and has stepped in for Charles at several engagements during his cancer treatment.
Princess Anne accompanied by her Lady in Waiting Dolly Maude.
Prince William attended the service solo while wife Catherine, the Princess of Wales remains at home recovering from surgery.
William arrived moments before Camilla for the service before the pair joined forces inside Westminster Abbey.
T?he smiles turned to sombre looks as they attended the service inside Westminster Abbey.
The event marked the 75th anniversary of the Commonwealth.
?Prince William was seen leaving Windsor Castle earlier in the day, seated in a car next to his wife, who was reportedly scheduled to attend an appointment in London.
Queen Camilla speaks with guests as she attends an annual Commonwealth Day Service at Westminster Abbey.
William enjoyed a sweet moment with a young girl who gifted him a bunch of flowers after the service.