The Duchess of Cambridge's parents said the new Prince of Cambridge is "absolutely beautiful."
The Duke and Duchess are "both doing really well. We're so thrilled," said Carole Middleton on the steps of the Lindo Wing as she left the hospital.
She said she had "absolutely not" given a suggestion for the child's name.
The royal baby appeared to wave as he was introduced to the crowds outside the hospital for the first time.
The Duke and Duchess of Cambridge proudly showed the world their baby son, a future king, before taking him home tonight.