The Duke shared his favourite karaoke tune and go-to takeaway order in the special episode.
The royal calls the signing "a legacy we can all be proud of, following a season we will never forget".
Kate Middleton and Prince William released the photos of their youngest on Wednesday.
Britain's Prince William and his wife Kate encouraged people to take care of their mental health during the coronavirus outbreak. Speaking via a video William said the tips and advice offered by the Public Health England's Every Mind Matters programme were helpful to those experiencing "strange feelings and difficult circumstances" while in lockdown. The Duke and Duchess of Cambridge also spoke about the difficulties National Health Service workers face on the frontline and commended them in tackling the spread of coronavirus.
Prince William and Kate took part in a video call with children of key workers and their teachers at Casterton Primary Academy in Burnley. The couple were in high spirits as they laughed and joked with the pupils – and offered their thanks to teachers for keeping the school open for those that need it as the coronavirus pandemic continues.
The royal family reunited for Commonwealth Day services at Westminster Abbey on Monday - but one particular encounter has left fans speculating. In their last royal engagement before stepping down from royal duties at the end of the month, Harry and Meghan were seen to greet William and Kate in a moment that some perceived as a “snub”.
The Commonwealth Day services at Westminster Abbey were a little different for the royals this year.
“By the way, the Duke and Duchess of Cambridge are spreading coronavirus, Sorry," the royal cracked at an event in Dublin.
The Duke and Duchess of Cambridge took all three of their kids "lambing."
To mark the Heads Up Weekends, the Duke of Cambridge has written in every match-day programme across the football leagues.