Princess Kate Middleton’s three children, Prince George, Princess Charlotte and Prince Louis, added their own personalized touch to their mom’s annual Christmas carol service this year.

The royal kids were photographed taking part in Friday night’s holiday festivities as event goers decorated the Christmas tree outside Westminster Abbey.

The big décor piece was accessorized with a long red paper chain filled with messages and names — which George, 12, Charlotte, 10, and Louis, 7, added their names to.

Photos showed their parents, Prince William and Middleton, both 43, watching on as their little ones participated in the activity.

The Prince of Wales and his family wore a matching color scheme as he and his boys sported navy blue suits and white shirts for the occasion. Charlotte, on th

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