It appears that OK Magazine cover which says Britney weight loss of 15 lbs in just 4 weeks is a bogus after all. These pictures appear to be taken from a 2003 archive of Britney Spears photo shoot.

So What method did Britney use to lose weight ? “Britney is a pro at losing weight fast. She can drop seven to 10 pounds within two weeks,” says a source close to Spears.

So what is Britney's 2008 Diet and Weight-Loss Plan ? Her plan is simple and straight forward: she eats five, high in protein meals a day, she ditched empty calories such as soda and hamburgers.

Instead of fried chicken fingers, she has switched to whole-grain chicken fingers, and she uses low-sugar-based balsamic vinaigrette on her Caesar salads,” says the source.