Metamorphosis: (Noun) A change of the form or nature of a thing or person into a completely different one.

Britney Spears looks like she's back to her old, toned self from the 90's going by these new photos released on her website today, which were taken at rehearsals for her upcoming tour. According to Us Weekly, her strict diet and exercise regimen has been paying off:

Spears has shed 20 pounds in recent months, whittling her waistline to its trimmest in years, thanks to two-hour cardio-and-strength-training workouts three times a week (on top of dance rehearsals), Us Weekly recently reported. "It's a nonstop workout," Bally Total Fitness trainer Steven Boggs, who has worked with Spears, told Us of the routine, which includes moves like shoulder presses and jump squats.

She has also revamped her diet, opting for a 1,100- to 1,200-calorie-a-day meal-delivery plan from Sunfare consisting of three meals (breakfast burritos, barbeque chicken salad and turkey burgers) and two snacks (think cheese and nuts). (Source)

God, how unfair is that. Britney can transform from a disgusting, paunchy slob into a 6-pack goddess with only the help of an entire team of personal trainers, nutritionists and handlers. But when I need to lose a few pounds, I still have to resort to eating nothing but Tic Tacs, sunflower seeds and laxatives for an entire month. But whatever, at least I can open childproof caps by myself. In your face, Britney!