Princes William and Harry joined stars including Rod Stewart, Idris Elba and Melanie Chisholm to man the phones on a trading floor in London on Wednesday (11Sep13) as part of a 9/11 charity event.
A whole host of actors, musicians and royals joined the British leg of Cantor Fitzgerald's and BGC Partners' annual Charity Day, which commemorates the victims of the 2001 terrorist attacks.
As part of the event, famous faces man the phones and the day's profits are donated to good causes.
Stewart was there with his wife Penny Lancaster while Prince William and his brother Prince Harry also took calls during the star-studded event.
Other celebrities who turned out for the day's trading in London included Sir Ian McKellen, Sean Bean, Anna Friel, David Hasselhoff, Cerys Matthews, Danny Dyer and Ashley Roberts, while on the other side of the Atlantic, Mariah Carey's husband Nick Cannon, Sean 'Diddy' Combs, actor Zachary Quinto, and The Sopranos stars Edie Falco and Bobby Cannavale turned out in New York.
Last year's (13) event raised millions of dollars for good causes worldwide.