it's important to consider genetics in this equation. also if you're female and has childbirth, you probably wont get the abdominal definition. try heavy leg extensions to make those lower leg muscles pop out, not too heavy but heavy enough you could only do 3x10 (you could increase weight and drop reps accordingly if you're feeling up to it...always a smart choice.
diet is tough b/c everyone is different. watch those fats, and get steady and not overapundant carbs. with enough calories your body doesn't need protein bars and drinks (which add calories and fat to parts of your body). hope that helps.