George, 11, Charlotte, 9, and Louis, 6, walked alongside their parents Prince William and Kate, the Princess of Wales, as members of Britain's royal family made their way into St. Mary Magdalene ...

Princess Anne sported her signature red scarf, a tartan skirt and jacket ... with his former wife Sarah Ferguson.

Kate wore a long, dark green coat with a matching hat and a green and blue plaid scarf wrapped around her ... and their mother Sarah Ferguson, the Duchess of York, who all joined royal family ...

Royal family members usually check all the right boxes when it comes to fashion, but some of them have donned eyebrow-raising ...

and he is thought to be spending the festivities with his ex-wife Sarah Ferguson, MailOnline reports. He had also cancelled his appearance at the pre-Christmas lunch at Buckingham Palace on Thursday.

Picture: AFP She wore a matching emerald green coat by Sarah Burton for Alexander McQueen and a bow-adorned hat with a tartan scarf and black ... and close friend Sarah Ferguson.

She's wearing a festive green coat by Sarah Burton for Alexander McQueen, a matching hat and a blue and green chequered scarf as she holds hand with her youngest child, Prince Louis, six.