Diana‘s sons are all grown up, becoming officers in the British Army, occasionally getting photographed while misbehaving, and planning a big concert for their mother. The Concert For Diana is scheduled for July 1st next year and will be featuring artists like Elton John, Pharrell Williams, and Joss Stone. The shindig was announced just a few weeks ago, but guess what? Tickets are already sold out! There may be more available in early 2007, so you’d better check the event’s website regularly.The concert isn’t just going to be held to celebrate the Princess of Wales. The proceeds from the event will go to the charities supported by the Princes, Centrepoint and Sentebale, as well as the Diana, Princess of Wales Memorial Fund.