Prince William and Princess Kate welcomed Prince George in July 2013, and the little one has been stealing hearts ever since. Fatherhood was "quite a change" for the Duke of Cambridge, he said during a royal event three years after George's arrival. "I'm very lucky in the support I have from Catherine, she's an amazing mother and a fantastic wife," William explained in 2016. "I've struggled at times. The alteration from being a single, independent man to going into marriage and then having children is life-changing." The duke, who also shares Princess Charlotte and Prince Louis with Kate, went on to call his eldest son a "little rascal sometimes" who kept him "on [his] toes," but George is still a "sweet boy." William added, "Having a daughter is a very different dynamic. So I'm learning." Keep scrolling to see photos of Prince George over the years: