Cheryl Cole brought her protégé, Alexandra Burke, the X Factor winner, out to dinner at the Wolseley restaurant in London. Burke and Cole looked beautiful in their evening wear. Cole retained a protective hold over Burke as she steered her away from the paparazzi. Burke has shown herself to be a diligent pupil. She dropped about 6 dress sizes as she went from size 14 to size 8. Burke said she has promised herself to stay single for the next 10 years as she tries to build up a career.