Cuteness overloaded! British royal family releases pictures of Princess Charlotte kissing Prince Louis

The solo photo of Louis was taken on April 26, just three days after his birth. And the new prince is wide awake in his first-ever portrait.

In another image, three-year-old Princess Charlotte is kissing her sleeping brother, while the other shows the royal baby propped against a cushion.

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Kensington Palace said, "The Duke and Duchess of Cambridge are very pleased to share two photographs of Princess Charlotte and Prince Louis."

Louis Arthur Charles, fifth in line to the British throne, is William and Kate's third child and a sixth great-grandchild for Queen Elizabeth and her husband Prince Philip.

He will hold the title of prince after the Queen changed the rules in 2012 to ensure that all of William's children would be entitled to the style, not just his eldest son.

Kate loves photography and regularly shares photos she’s taken of her royal children. From birthday shots to first day of school moments, the royal mom of three can usually be found behind the camera capturing her family’s special memories.