Prince William and Prince Harry played at being traders for the day as they took calls on Wednesday to raise money for a 9/11 charity.
The royals helped broker deals at BGC Partners' trading floor in Docklands, with Harry telling the other traders: "He's on the phone, and it's all baby chat."
William was also joking around, telling the person on the end of the phone: "It's all a wind-up, I'm Gary". The appearance came the day before Prince William confirmed that he's leaving the RAF to concentrate on his royal duties.
When the trade had been completed William remarked: "Bloody hell, was that a billion?!" In fact it was a £21bn trade, a world record for a foreign exchange.
Several other celebrities took to the lines in aid of those who lost their lives in the September 11 attack in New York.
Rod Stewart and his wife Penny Lancaster also took to the lines taking calls from traders, as did Luther star Idris Elba and Helen McCrory.
The Spice Girls were also represented with Mel C looking very glamorous as she took her place on the trading floor.
Mel C PA.17566837
As you'd expect, The Hoff arrived in style to the charity day, coming in with two Baywatch beauties (complete with lifesaving equipment).
BGC lost 658 employees when the World Trade Center was hit 12 years ago and has so far raised more than £65m for charity.
