<p>Kristen Stewart is reportedly so distraught in the wake of her affair with director Rupert Sanders being exposed that she's "refusing to eat".<br /><br /></p>.<p>The 'Twilight' star - who is still in hiding after boyfriend Robert Pattinson walked out of their home - has become a "nervous wreck" and is "living off a diet of cigarettes, Red Bull (energy drink) and crisps", reported Showbiz Spy.<br /><br />"Kristen is a nervous wreck and existing on a diet of cigarettes, sugar-free Red Bull and the occasional bag of potato chips.<br /><br />"She's been hiding out at the Los Angeles home of a producer friend and is looking pale and worn-out," said a source.<br /><br />The source also said that the star was so "grief-stricken" that even when she tries to eat she gets sick.<br /><br />"Whenever anyone tries to push her to eat even a small bowl of soup, she either claims that she's just had something, which isn't true, or that she's nauseous and there's no chance of keeping anything down," they continued.<br /><br />"Kristen is grief-stricken and has hit rock-bottom. In many ways, Kristen living off cigs and Red Bull is a way of punishing herself."</p>
<p>Kristen Stewart is reportedly so distraught in the wake of her affair with director Rupert Sanders being exposed that she's "refusing to eat".<br /><br /></p>.<p>The 'Twilight' star - who is still in hiding after boyfriend Robert Pattinson walked out of their home - has become a "nervous wreck" and is "living off a diet of cigarettes, Red Bull (energy drink) and crisps", reported Showbiz Spy.<br /><br />"Kristen is a nervous wreck and existing on a diet of cigarettes, sugar-free Red Bull and the occasional bag of potato chips.<br /><br />"She's been hiding out at the Los Angeles home of a producer friend and is looking pale and worn-out," said a source.<br /><br />The source also said that the star was so "grief-stricken" that even when she tries to eat she gets sick.<br /><br />"Whenever anyone tries to push her to eat even a small bowl of soup, she either claims that she's just had something, which isn't true, or that she's nauseous and there's no chance of keeping anything down," they continued.<br /><br />"Kristen is grief-stricken and has hit rock-bottom. In many ways, Kristen living off cigs and Red Bull is a way of punishing herself."</p>