This side by side photo shows how Princess Charlotte takes after Princess Diana

This side by side photo shows how Princess Charlotte takes after Princess Diana.

Although many would say that Princess Charlotte is the image of her father, Prince William, we can't help but notice how much the tot is starting to look like her grandmother, Princess Diana. As Princess Charlotte is set to turn four-years-old this May, the little girl's features are changing and there is striking similarity with Princess Diana. From her eyes, to her nose, to her pout - there's no denying that Charlotte looks very similar to her father's side of the family. Fans were quick to comment on the photo, pointing out the similarities between grandmother and granddaughter.

"Goodness. I thought she looked like her father but with the pictures of princess Diana next to her as a child its amazing how much they resemble. She would be so proud of her boys and grandchildren." "Princess Charlotte inherited her grand mother’s expression." "Definetly has resemblances to both Queen Elizabeth and Princess Di."

But Charlotte isn't the only one taking after her father and grandmother, many also believe Prince George has inherited his father's royal looks - noticing similarities between the Duke of Cambridge and Prince George at a similar age. It's a big month for the Cambridge family as Prince Louis, the youngest member of the clan, celebrates his first birthday on April 23.