Prince William shows concern for Princess Charlotte

Prince William has been praised by royals fans after a video of the Prince of Wales looking concerned for his daughter, Princess Charlotte, surfaced online.

In the video widely circulated online, the future king is seen making sure his daughter is "okay" as she stays with the crowd for pictures after the royal family attended the Christmas Day church service in Sandringham.

"Charlotte, you okay?" William, who's waiting for his daughter with Prince Louis a few feet away, is heard saying.

"Yeah," responds says Charlotte reassuringly, sparking laughter from well-wishers who were taking photos with the princess. 

Prince Louis's attention is always drawn to Charlotte when William calls her name.

Earlier, King Charles and Queen Camilla had led senior royals to a church in Sandringham greeting well-wishers . 

Charles and Camilla walked ahead while the Prince and Princess of Wales, William and Kate, and their three children, followed.

Other family members included Princess Anne and her husband Tim Laurence, the Duke and Duchess of Edinburgh with their children, as well as the king's niece Zara and her husband Mike Tindall.