Video: Royal baby: watch out Prince George, Harry wants to have fun And when he was asked whether Prince William was up to the job of fatherhood, he replied: "Of course he is! Hopefully most people are. The Prince was speaking at a private viewing of a photographic exhibition showcasing the work of his charity Sentebale, which helps vulnerable children in Lesotho, one of the world's poorest countries. Sentebale, which means Forget Me Not in the local language, was founded in 2006 by Prince Harry and Prince Seeiso of Lesotho, and has improved the lives of thousands of children by providing healthcare and education to those most in need, including children orphaned by the country's HIV/AIDS epidemic. Among the guests was David Furnish, whose partner Elton John has helped raise money for a new Sentebale children's centre through the Elton John Aids Foundation's White Tie and Tiara ball. Mr Furnish said: "I congratulated him on being an uncle and he smiled proudly. I'm an uncle many times over and I love it. Elton John is currently in the South of France, recovering from a bout of appendicitis before surgery to remove his appendix. Mr Furnish said of Sentebale: "At our ball we gave people the chance to purchase cabins at the new Mamohato Children's Centre, and we sold ten cabins at £35,000 each. It was a huge success because people can see how it makes a difference to children's lives. Other guests included the BBC newsreader Kate Silverton, who has seen the poverty of Lesotho first hand when she filmed a report there. The Sentebale - Stories of Hope Exhibition features pictures taken by Chris Jackson, of the photographic agency Getty Images, who has visited Lesotho five times when the Prince has been there. It also includes plans for the Mamohato Children's Centre, which will allow the charity to quadruple the number of HIV-positive children to whom it can provide psycho-social support. The Prince, wearing a blue suit and a white open-necked shirt, told an audience of 140 invited guests that he would not make a long speech because it was "absolutely roasting" in the small gallery off Oxford Street. He said of the charity's work: "In the absence of parents for the vast majority of Lesotho children we at Sentebale we hope are filling the gap as best we can. The stigma that surrounds HIV and Aids must be explained and, I hope, understood. Sentebale is making a huge difference. We at Sentebale want to give Southern Africa hope for the future. The exhibition, at the Getty Images Gallery in Eastcastle Street, London W1, is open to the public from July 26 until August 10, with free admission.