Top 12 Bikini-Body Transformations

#7 Jessica Simpson: The Newlyweds star has taken to Twitter to bemoan her trainer’s love of squats, but there’s no doubt they’re working for the pop star, who is clearly bouncing back from a widely-publicized weight gain. “Squats can build muscle mass,” Sass says. “And the more muscle you have, the more calories you burn.” (Photo: Splash News/Flynet)