Oscar-winner Emma Thompson is celebrating weight loss that dropped her two dress sizes. The "Harry Potter" star credits the personal trainer of Kate Middleton for her success. Thompson gushed over guru Louise Parker, who helped her shed pounds with a no-diet system that fit her personal style. But before you run out and buy the "The Louise Parker Method," get a taste of the cost. This highly-touted method beats obesity and tames eating, if you can swallow the price.

Emma Thompson diet easy but not cheap

Parker's diet plan isn't a diet, as per Thompson.

The "Love Actually" star says it's a regimen for healthier eating laid out in The Louise Parker Method: Lean For Life: The Cookbook." The recipe book features a "sustainable" (as in maintainable) eating plan, not crash dieting or weird foods. Thompson hates the kale juice and "depressing" sprouts that characterize many diets. She likes that she can enjoy a glass of wine without starving herself. But (and this is a big but) where "The Method" is easy on usage, it's hard on the wallet. The complete course, with personal trainer help, runs a meaty $5,500 per head.

Emma Thompson drops two sizes in six weeks

The Academy Award winner is delighted with the fact that she was able to shrink from a size 10 to size six in a month and a half.

She likes the portion control and common sense. She praises Parker for not only being able to get the actor's lazy "arse" moving, but occasionally keep it in motion. She appreciates the trainer's humor and humanity. According to Thompson, they all use her (presumably meaning all the royals and British film stars). Duchess Kate Middleton certainly managed to shed baby weight gain speedily after the births of George and Charlotte.

The Un-diet is nothing new

Seems like "un-diet" and "diet-free" are the buzzwords in weight loss currently. Every weight loss plan seems to distance itself from dieting and it might be because of the word's connotations. It conjures up images of restrictive crash dieting and fad celebrity diets. However, all research shows losing weight must involve traditional elements.

Whatever you call it--portion control, calorie counting (or points in Weight Watchers terms)--changing food choices, and eating less are at the core. So despite the trend in non-dieting, a reduced-calorie diet is unavoidable if you want to avoid or beat obesity.