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.
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.