The Duke and Duchess of Cambridge's Third Child Has a Royal Title, but There's a Catch

Prince William and Kate Middleton's third child is expected to arrive in mid-April, and there is already talk about what his or her title will be. Prince George and Princess Charlotte's younger sibling will undoubtedly steal the spotlight as the newest member of the British royal family, and now we know exactly how to address the tiny tot when he or she arrives.

According to royal historian Marlene Koenig, the third baby's official title will be His Royal Highness Prince [name] of the United Kingdom of Great Britain and Northern Ireland, or Her Royal Highness Princess [name] of the United Kingdom of Great Britain and Northern Ireland.

But not so fast. Since Prince William and Kate Middleton are technically the Duke and Duchess of Cambridge, the newcomer will be addressed as His/Her Royal Highness Prince/Princess [name] of Cambridge. "Royal children are 'styled' differently if they are the children of a royal duke," Marlene explained of the subtle title differences to Town & Country.

The new royal baby will be the fifth in line to the throne behind big sister Princess Charlotte, as previously reported, due to a new succession law put in place in March 2015 that bases succession on birth order and not sex. Now that we have that settled, find out what Meghan Markle's title will be once she ties the knot with Prince Harry in May.