Prince Louis apparently kept a surprise secret from his big sister ahead of the Princess of Wales's Together at Christmas service

While at the “Together at Christmas” celebration at Westminster Abbey on Dec. 6, Princess Kate revealed why she was so proud of her 6-year-old son, Prince Louis. Kate attended the annual holiday celebration alongside her husband, Prince William, and their three children: Louis, Princess Charlotte and Prince George.

Catherine, Princess of Wales, hosted the 'Together at Christmas' carol service, and Prince Louis helped her with a surprise for Princess Charlotte.

There were several key takeaways from Kate Middleton’s Christmas carol concert, including Prince George and Prince Louis’s resemblance to their dad, Prince William, and Princess Catherine’s super-telling body language.

For the second year in a row, Prince George, Princess Charlotte, and Prince Louis joined Prince William and Kate Middleton at Westminster Abbey for Kate's annual Christmas Carol service. It's George and Charlotte's third time attending (they also went in 2022 ).

Prince George appeared to be keep a protective eye on his younger brother during their mother's biggest event of the year.

Credit: Aaron Chown - WPA Pool/ Kate Middleton and Prince William's children are apparently extremely professional when it comes to online shopping for Christmas presents. King Charles' former royal butler,

Kate Middleton says that her son Prince Louis impressively kept a secret about her Together at Christmas carol service from his sister, Princess Charlotte. On Dec. 6, Princess Kate hosted her fourth annual Together at Christmas concert at Westminster Abbey in London,

Prince Louis' love for Kate Middleton's parents, Carole and Michael Middleton, was on display during the royal family's Together at Christmas concert on Friday, December 6. The youngster was spotted with a heartfelt note he left on the "kindness tree" outside of Westminster Abbey.