Some VERY special Christmas messages! Wales children post letters to kids' charities - but is Kate's pal Tony Hudgell in line for a note

Prince George, 10, Princess Charlotte, eight and Prince Louis, five, put on an adorable display in matching outfits as they arrived at Westminster Abbey 

Kate Middleton has arrived at her famous annual Christmas carol concert with her three children in tow.

Prince George, 10, Princess Charlotte, eight, and Prince Louis, five, all looked adorably festive as they supported their mother, the Princess of Wales, at the stately service in Westminster Abbey, London.

Upon arrival, the children posted Christmas cards, which will be distributed by charities, including Child Bereavement UK, East Anglia Children's Hospice, Evelina London and the British Red Cross, as a surprise gift to children. The Princess of Wales encouraged guests to bring a card for children who might struggling this year. 

Prince George's letter was addressed to Tony, presumably Tony Hudgell, the nine-year-old boy who has raised millions of pounds walking vast distances on prosthetics after his legs were amputated in infancy due to horrific abuse.

Tony, from West Malling in Kent, met royal mother-of-three Kate, 41, at Evelina London Children's Hospital earlier this week, where he and his mother Paula chatted with her - and Paula was pictured feeling a little emotional at the meeting.

Upon arrival, the junior royals were also joined by their father Prince William as they prepared to cheer on the princess as she hosted her third annual carol service.

King Charles' eldest grandson and the second in line to the throne matched his father for the occasion, and looked dapper in a navy suit with a crimson red tie. 

His younger sister Princess Charlotte personified the elegance of her famous mother as she donned an elegant crimson red coat. 

Meanwhile Prince Louis looked just as stylish as his eldest brother in a navy ensemble, cord trousers, and Chelsea boots. 

Evidently honing their fashion prowess from their father, the future king matched his children and donned the on-theme colours of crimson and navy. 

The royal family were among many who stepped out to witness the princess perform at the special Christmas service, which is poised to honour those who work to support babies, young children and families in communities across the UK. 

It comes as Kate also stepped out tonight to attend the glittering Christmas event at Westminster Abbey in London. 

The Princess of Wales, 41, who is hosting the Together At Christmas service, looked festive in a cream ensemble. 

The mother-of-three was joined by the Prince of Wales and their children Prince George, 10, and Princess Charlotte, eight, and Prince Louis, five. 

The service - attended by the King Charles and Queen Camilla - will recognise the selfless efforts of communities throughout the UK, highlighting the importance of coming together to support one another. 

Spearheaded by the Princess, it will combine both traditional and modern elements, reaching people of all faiths and none. 

The service, Royal Carols: Together at Christmas, will then be shown on ITV on Christmas Eve.

The service will see the world-renowned Westminster Abbey choir perform some of the nation’s most beloved carols, alongside musical performances by guests including Jacob Collier, Freya Ridings and James Bay, and a special duet from Beverley Knight and Adam Lambert. 

Poignant readings will be delivered by speakers including Prince William, Micheal Ward, Emma Willis, Roman Kemp, and Jim Broadbent. 

A specially commissioned poem written by Joseph Coelho, the Children’s Laureate, will also be read by Leonie Elliott. 

The broadcast will also feature an introduction from Kate and films which bring to life the importance of early childhood and celebrate the remarkable contribution people in our communities are making to support the very youngest members of our society during those crucial early years.

 These will include contributions from Rio and Kate Ferdinand, Ugo Monye, Andrea & Virginia Bocelli and Dame Sheila Hancock. 

The service will see Westminster Abbey filled with sustainable, eco-friendly festive decorations, providing a beautiful Christmas backdrop, nodding to the theme of children and families. 

New features this year include a Christmas Post Box located outside the Abbey for children to send handmade Christmas cards and best wishes to other children who might be struggling this year. 

In addition, guests will be treated to carols and Christmas songs upon arrival from the Action for Children Young Carers Aloud choir, made up of 12 young carers, the youngest of which is just six years old. 

Guests attending the service have been nominated by Lord-Lieutenants across the nation, in addition to charities associated with Members of the Royal Family. 

They will be joined by those working in the early years space which is a key focus area of The Princess of Wales’s work through The Royal Foundation Centre for Early Childhood. 

It will also consist of those who may have had a challenging year, including children and families, or those who might find the winter period difficult. 

It comes after a beaming Kate posed in front of a Christmas tree for the carol service promotional clip on Thursday.

In it, Kate, sporting a £420 Self Portrait sequin jacket, says: 'Join me this Christmas Eve for a special carol service, as we say a heartfelt thank-you to all those supporting the very youngest members of our society during those crucial early years.'

Kate's appearance in the teaser clip comes comes after a week of drama for the Royal Family following the explosive accusations by author Omid Scobie.

In a Dutch translation of his new book Endgame, the Princess of Wales and King Charles were named as the alleged 'royal racists' who questioned what skin colour Prince Harry and Meghan Markle's son, Archie, would have before he was born.

Neither Buckingham Palace or the Duke and Duchess of Sussex have commented on any of the allegations by Mr Scobie - revealed in the Dutch version of his 400-page tome, with the Firm instead appearing to stick by the age-old royal dictate of 'never complain, never explain'.

Royal Carols: Together at Christmas will be broadcast on Christmas Eve at 7.45pm on ITV1 and ITVX.