Ashley Tisdale (High School Musical actress) maintains her slim figure by working out 3-4 times a week with a trainer.
When she eats, she keeps a close count of how much carbs are consumed for every meal.
It goes to show you that stay fit and trim requires a lot of work and dedication.
http://www.self.com/magazine/blogs/selfystars/2009/11/selfy-vip-ashley-tisdale.html