Wearing a crisp, white collared shirt with blue piping, the cheeky young royal beams for the camera in a picture taken by photographer Matt Porteous.
Along with the photograph, Kensington Palace wrote: 'The Duke and Duchess of Cambridge are very pleased to share a new photograph of Prince George to mark his fifth birthday – thank you everyone for your lovely messages.'
Prince George isn't the only little royal being compared to his famous mum.
Princess Charlotte stepped out for her little brother, Prince Louis', royal christening and the Internet couldn't get over the young royals resemblance to the Duchess of Cambridge.
Related: Prince William reveals hilarious fact about Princess Charlotte
However, despite many noticing the similarities between Charlotte and her mother, the most noteworthy similarities that royal fans have picked up on is that of the three-year-old royal and her great-grandmother, Queen Elizabeth.
Related: Hilarious footage shows Princess Charlotte telling off photographer's at royal christening
Who do you think looks most like Catherine Middleton - Prince George or Princess Charlotte? Head to our Facebook page to let us know!
