Signed in as @TheDukeOfYork, the prince sent his first tweet: "Welcome to my Twitter account – AY,” indicating that Andrew wrote the tweet himself. The profile notes explain, "Tweets from HRH are signed - AY."
Princesses Beatrice and Eugenie's 53-year-old dad currently has 19,223 followers after being active for less than 24 hours, and he himself is following 51 mainly UK-centric accounts, including Clarence House and The British Monarchy.
Meanwhile, Prince Andrew and family are preparing to welcome Kate Middleton and Prince William’s first child, due July 13.
His Royal Highness Prince Andrew has opened a Twitter account, making him the first member of the royal family to utilize the social networking site.