20 Mar Get their easy, diet-free secrets for getting and staying skinny here. "Women who don't diet are still reading ingredient labels," says Lori. We all have that one friend who seems to defy all laws of calories and weight gain. You know, the one who can put down jumbo-size fries, jelly-filled donuts and. Many of the city's mothers-to-be are counting every carb and pushing their heart- rate monitors to the limit to stay skinny and sexy while pregnant. Is this harmless.