#1 LeAnn Rimes:
The country singer has erred on the side of pudgy over the years, but recently debuted a chiseled physique on the cover of Shape. She says planning workout dates with her hubby and making low-cal versions of her fat-bomb faves (like grilled cheese) have made the difference. Cooking light “can not only trim calories, but help adjust your tastebuds to lighter cuisine,” says Sass. (Photo: Splash News/Shape Magazine)