What are the chances of a beautiful, slim, tall person having a beautiful, slim, tall sister? Um, well, while we are not geneticists or statisticians, we figure it must be fairly likely. Just look at Kate Moss and her model half-sister Lottie, who recently signed to Storm. Or Frankie Rayder and her sister Missy. Or Cara Delevingne and her sister Poppy. Or indeed any of the other supermodel sisters in our gallery...