As seen in the photo at the top of this story, a town crier also announced the good news on Monday afternoon.
The couple has two older children. Prince George is now four years old, and Princess Charlotte is now 2 years old.
Meanwhile, he next big event for the Royal Family is officially less than a month away. Prince Harry will marry Meghan Markle on May 19.
It's a Boy! Kate Middleton and Prince William Welcome Third Child
By Joe HyerApr 23, 2018
