Prince George, Princess Charlotte and Prince Louis brought joy to royal fans as they joined their mother at the festive concert held at Westminster Abbey. Prince George looked dapper in a navy suit, while Princess Charlotte wore a solid coat, tights and dark Mary Janes. Prince Louis also looked stylish, his brother and sister in navy suits.

The brothers shared touching messages of kindness outside the home. Prince Louis expressed his support. It is unclear whether his note was intended for King Charles Andilla or Carol and Michael Middleton. The Kindness Tree allows guests to hang notes for those in their lives, in keeping with the ceremony's theme of love and compassion.

Tonight's ceremony encourages reflection, love and compassion. Around 1,600 guests will attend, each receiving a service order designed by illustrator Charlie Maxie, which was announced yesterday. For the first time, the Princess included a personal letter thanking those in attendance for bringing comfort and hope to others.

Princess Beatrice arrived with her husband Edoardo Mapelli Mozzi and stepson Christopher, known as Wolfie, for the much-anticipated concert. Social media users took note of their adorable looks, particularly complimenting Beatrice's burgundy coat and shoes. She is expecting her second child this spring.

The Duchess of Cambridge's younger sister, Pippa Middleton, was spotted arriving at the Abbey just before the ceremony, along with the daughters of Prince and Princess Michael of Kent. The guest list also included notable figures such as Olympic swimmer Adam Peaty, singer Paloma Faith and Sir Chris Hoy.

Earlier today, Pippa Middleton was seen in a stunning red coat, which she has worn before, but this year she added a trendy black bow for a fresh look. The Duchess often wears Alexander McQueen trench coats, but there are affordable alternatives available for those who want to copy her style without paying the royal price tag.