Saatchi bought it for a mere £600 two weeks ago. It is the first work sold by single parent Stella Vine, 35, who said the death of her mother and romantic disappointment inspired her 30 or so paintings on the life of the princess. "On the day of Diana's funeral I was glued to the telly, howling, like so many other people," she said. "But I love all the stories around her, like Dodi and the possible pregnancy, and all the other conspiracy theories."