British royals Prince William and Prince Harry have been invited to perform alongside boy band Take That at the Diana Memorial Concert in London this summer (07). The concert will be staged at Wembley Stadium in July to mark the tenth anniversary of their mother Princess Diana's 1997 death in a car crash in Paris. Singer Howard Donald says, "We are inviting them on stage to join in with our performance. We know their mum Diana loved us so it will be cool for them to do it."