The newborn was delivered by Princess Kate at St. Mary's Hospital in London.
This is the second child for the actor and his girlfriend, Lauren Hashian.
Sara Haines reports the buzziest stories of the day in "GMA" Pop News.
ABC News' James Longman reports from St. Mary's Hospital in London where media and royal watchers are gathered awaiting Kate's delivery of her third child.
The country music star rocks out to his hit song live from Times Square.
George, who turns 5 in July, and Charlotte, who turns 3 next week, were brought to St. Mary's Hospital in London by their father, Prince William.
The duke and duchess of Cambridge aren't the only people at St. Mary's Hospital in London to welcome a new baby.
The country music star sings his hit song at "GMA" in Times Square.
The star of the new film dishes on what fans can expect live on "GMA."
ABC News' Amy Robach and royal contributor Victoria Murphy report on the latest details of the birth of Kate's third child.