Prince Andrew has become the first major member of the Royal Family to take and tweet his selfie.
The Duke of York took the picture at the final of Pitch @ Palace competition, which aims to help students interesting in launching their own start-up firms.
In a series of firsts, the Duke also appeared to have sent his first tweet, initialing it "AY" to indicate that he wrote it.
Welcome to #pitchatpalace I wish you all a great event, both entrepreneurs and audience. AY
And he also allowed mobiles into the state room at St James's Palace to mark the finals of the competition:
He told the 350-strong audience: "This is a unique day at the Palace because we are encouraging you to use your phones and electronic gadgetry.
"As a result of that I've decided there's a bit of a thing going around about selfies", he added, before taking the picture.