Pakistan, April 23 -- King Charles III shared a heartfelt birthday message for his grandson Prince Louis as the young royal celebrated his eighth birthday. The message was released alongside a new portrait shared by the Prince William and Catherine Princess of Wales to mark the special occasion.

The royal family's official social media accounts reposted the birthday portrait with a simple greeting wishing Prince Louis a happy birthday. The celebration highlighted the close bond the monarch shares with the children of the Prince and Princess of Wales, including Prince George and Princess Charlotte.

Prince Louis, the youngest child of Prince William and Catherine, has often appeared at royal events with his siblings and parents. Over the ...