Similar to how they did for their youngest child Prince Louis’s sixth birthday a week ago, the Prince and Princess of Wales posted the picture on social media.
Catherine has withdrawn from her royal duties while undergoing treatment for cancer.
She has previously called the third-in-line princess “the one in charge” and assertive in contrast to George.
Catherine took the picture a few days ago next to a clematis plant with pink petals.
The Princess of Wales also captured an identical picture of Louis that was published last week. It follows some discussion regarding modifications made to a photograph.