Princes William and Harry want Sir Paul McCartney, Beyonce Knowles and Justin Timberlake to join the line-up for their Diana tribute concert.

The princes are desperate to convince the world's biggest music stars totake part in the event - to mark the 10th anniversary of their mother'sdeath.

They are keen for The Beatles' legend to lead a "supergroup" who wouldperform the Fab Four's greatest hits.

A source told Britain's Daily Mirror newspaper: "The princes know they needto get artists who are loved around the world, but particularly in America,to ensure it's a truly worldwide event no one will forget. They would loveit to be the biggest since Live 8 or Live Aid.

"They really want Justin and Beyonce to ensure there's massive coverage inthe U.S. Paul would be the icing on the cake. He met Diana many times and is a living legend. He has been approached and is in talks. He could dosomething special, like lead a supergroup, just as he did with Bono to kickoff Live 8."

The princes have already invited a host of musical stars to appear at thissummer's Concert For Diana, including Sir Elton John, Rod Stewart, KanyeWest, James Blunt, Meatloaf, Bryan Adams, Pharrell Williams, Orson, JossStone, Take That and Keane.

Dire Straits - one of the Diana's favorite bands - and the Spice Girls arealso being urged to perform.

The concert will take place at the new Wembley Stadium on July 1 - whichwould have been Diana's 46th birthday.

Tickets for the event sold out within 20 minutes last December. Money raisedfrom the event will go to several charities, including the Diana MemorialFund.

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