Princess Charlotte Elizabeth Diana of Cambridge Princess Charlotte, Kate and Will's middle child and only daughter, was born on 2 May, 2015. The cheeky little lady — who is constantly making silly faces or getting caught on camera in funny scenarios — is third in line for the throne behind her dad and older brother. She's the first-ever female royal to be able to hold her place in line for the throne despite having a baby brother (before her birth, the rule said that brothers would always jump in front of their sisters). Image Source: Getty / Pool / Samir Hussein