Waris Dirie, the Somalia nomad who became a supermodel, and an anti-FGM activist, first came to the world's attention with the publication of her autobiography, Desert Flower. The book was subsequently made into a film and little Safa Nour, from one of the slums of Djibouti in the Horn of Africa, was chosen to play the young Waris. The book and the film record many extraordinary things - from facing down a tiger, to being discovered...