This side by side photo shows a striking resemblance between Princess Charlotte and Queen Elizabeth.

Last night, the Duke and Duchess of Cambridge released three new photos of their daughter Princess Charlotte to mark her fourth birthday.

The Duke and Duchess of Cambridge are very pleased to share three new photographs of Princess Charlotte ahead of her fourth birthday tomorrow.

The photographs were taken in April by The Duchess at Kensington Palace and at their home in Norfolk. pic.twitter.com/skf95Z44EZ — Kensington Palace (@KensingtonRoyal) May 1, 2019

The little girl celebrates her day of birth on May 2 and of course, royal fans have been sharing congratulatory messages throughout the day. However, they've also been commenting on the fact that Princess Charlotte looks very like her great-grandmother, Queen Elizabeth II. Yes, people can't get over the resemblance between the four-year-old and Queen Elizabeth, especially after seeing childhood photos of the 93-year-old monarch. Of course, this isn't the first time that superfans of the royal family have pointed out similarities between family members and much has been made of the likeness between Prince Louis and his older brother, Prince George. This side-by-side snap features on an Instagram fan account and it's just adorable altogether. I mean, the facial expression is the exact same. Of course, Prince Louis has grown up considerably since these photos were released and new photos, taken by his mum, were shared recently to mark his first birthday. It's fair to say that the Cambridge family album 2019 will include some seriously adorable snaps.