The royal family just got a little bigger. The duchess of Cambridge, formerly known as Kate Middleton, delivered a boy Monday weighing 8 pounds, 7 ounces, per the Kensington Palace Twitter feed. "Her Royal Highness and her child are both doing well." This is child No. 3 for the duchess and Prince William, and they reportedly did not know whether it would be a boy or a girl. The baby, who will be fifth in line to the throne, joins siblings George and Charlotte, per the BBC. Meanwhile, the duchess' sister, Pippa Middleton, is reportedly pregnant with her first child, reports People. (The royal grandpa is apparently getting a fancy new job title.)