Former Vogue Australia Editor Kirstie Clements reveals in her tell-all book, "The Vogue Factor" that models eat tissues to stay thin. That’s not the only way that models keep off the pounds. One top model apparently went three entire days during a shoot without a single meal, while another opted to visit a hospital to receive drips rather than eat. Critics say Clements is just using her book to get revenge after being sacked last May.