Prince William and Princess Kate reappear as King Charles and Queen Camilla lead royals on Christmas Day

The King and Queen led the royals on the short walk to Mary Magdalene church on the Sandringham estate with the Prince and Princess of Wales and their children, following behind.

The Queen and the Princess of Wales co-ordinated in green coats, with Kate opting for an emerald green number, while Camilla sported a belted khaki ensemble.

Kate was all smiles in her first public appearance since her carol service on 6 December.

The royal accessorised her Sarah Burton for Alexander McQueen coat with a bow-adorned beret-style hat and a blue and green tartan scarf. 

The crowds had began to gather early, and the royals looked delighted by the turnout, as they smiled and waved at the locals.

While Charles and Camilla reside at Sandringham House for Christmas, William and Kate take up residence at nearby Anmer Hall.

Princess Beatrice looked beautiful as she dressed her baby bump in a camel coat from the Net-A-Porter for The King’s Foundation collection, designed by students from the foundation’s modern artisan education programme. 

She and husband, Edoardo Mapelli Mozzi, were also joined by Edoardo's eight-year-old son, Christopher Wolfie.

It's the second time the youngster has joined the royals for Christmas. 

The Waleses were dressed in hues of green and navy, with Charlotte sporting a checked coat, while William, George and Louis matched in navy suits.

Mike Tindall and his daughter Mia, ten, shared a laugh alongside Peter Phillips' eldest daughter, Savannah, 13.

Peter chatted with sister, Zara Tindall, who looked beautiful in a burgundy coat. The siblings were joined by Zara's middle child, Lena, six, and Peter's youngest daughter, Isla, 12. 

Princess Anne looked festive in red and a furry-brimmed hat as she chatted with her brother, the Duke of Edinburgh, on the walk to church.

Lady Louise Windsor, 21, was reunited with the royals in Sandringham, as she took a break from her studies at the University of St Andrews. 

She walked alongside her mother, the Duchess of Edinburgh, who looked elegant in a cornflower blue coat and matching hat. 

The pair were joined by Anne's husband, Vice Admiral Sir Tim Laurence, with the Duke of Edinburgh and James, Earl of Wessex following behind.

The church service was conducted by the Reverend Canon Dr Paul Rhys Williams.

The national anthem was sung before the first hymn, O Come, All Ye Faithful.

The likes of the Princess of Wales looked extremely touched as they were gifted with flowers and cards after the service.

One wellwisher embraced the Princess of Wales with a heartwarming hug. 

Kate had to take a step back from public duties this year as she received cancer treatment.

The Princess is making a gradual return to engagements, after completing chemotherapy in September.

The Wales children were seen carrying armfuls of toys, chocolate and flowers from members of the public.

And Louis looked thrilled as he was given chocolate and a Micky Mouse soft toy.

Princess Beatrice was a doting stepmum as she placed a supportive arm around Wolfie after church. 

The royal, who had to cancel her plans to spend Christmas overseas with Edoardo's family, is expecting her second child in early spring. 

Charles' cousins, Lady Sarah Chatto and the 2nd Earl of Snowdon, also stepped out with the royals on Christmas Day.

They are the children of the late Queen's late sister, Princess Margaret.

Also joining Lady Sarah were her sons, Arthur and Samuel, along with Samuel's girlfriend, Eleanor Ekserdjian, who made her Sandringham debut.