Kensington Palace has confirmed that baby #3 is here!

    "Her Royal Highness The Duchess of Cambridge was safely delivered of a son at 1101hrs. The baby weighs 8lbs 7oz.,” the palace tweeted on Monday, April 23. “The Duke of Cambridge was present for the birth. Her Royal Highness and her child are both doing well. The Queen, The Duke of Edinburgh, The Prince of Wales, The Duchess of Cornwall, Prince Harry and members of both families have been informed and are delighted with the news."

The royal couple announced in September that they were expecting a sibling for Prince George, 4, and Princess Charlotte, 2. Meanwhile, it was reported this weekend that Kate's sis Pippa is pregnant with her first child with hubby James Matthews!

Oh, and stay tuned for the first photo and the name of Will and Kate's bundle of joy!