R&B Beauty Beyonce Knowles has been beckoned for a stage concern harvest by Britain?s Princess William and Harry next year to mark the 10th anniversary of the death of their mother Princess Diana, according to reports. Elton John and Madonna are also said to be performing at the event. The Sunday Mirror reported that the brothers would arrange the event, scheduled to be held July 1, 2007 at London’s renovated Wembley Stadium, which can hold around 90,000 spectators. Proceeds would be donated to British charities and other causes supported by Diana, the newspaper reported. It was expected to be screened live on television. Paddy Harverson, spokesman for Prince Charles, who divorced Diana in 1996, could not immediately confirm the report. “We’re considering a number of options on how best to commemorate next year. William and Harry will make a decision in due course,” Harverson said. Diana, 36, her boyfriend Dodi Fayed, 42, and their driver Henri Paul, 41, all died when their car crashed at high speed in the Pont d’Alma tunnel in Paris, France, on Aug. 31, 1997.