He's apparently so into TV that it's sometimes hard for his parents to pull him away from the "telly."
“Trying to keep him off the television is hard work,” Prince William said.
The royal couple announced on Tuesday that they are expecting their third child in April 2018.
"The Duke and Duchess of Cambridge are delighted to confirm they are expecting a baby in April 2018," Kensington Palace wrote on its official Twitter account.
At the event on Monday, Duchess Catherine danced with cuddly Paddington Bear as they greeted children who were waiting to board a Belmond British Pullman train.