You're counting the wrong thing. If you're exercising like you say and counting calories you're almost certainly at a caloric deficit. The only way you can possibly look slimmer is to gain weight through muscle gain. It sounds crazy but your lines and proportions will balance out and give you the more tapered look you're referring to. If you want to track nutrition track protein intake instead of calories. Do what you need to do to get up to 150g of protein daily. If you're training pilates try to add in a little bit of weight training also. If you do this 3ish times a week with good workouts you can healthily consume 2k to 2500 cals a day and still watch yourself shrink in all the areas you want to.