I know what you mean. Most of my friends are healthy thin at 10 or 12, but I have a few friends who are so skinny! Not sure what size they are but I wouldn't be surprised if they weren't a 4 or 6. I hate it when they complain and moan at how fat they get if they eat what to me is normal food! I have been so close to arguing with them about them not knowing what being fat is about it, upsets me so much. But my OH stops me from getting mad, tells me they are not worth the hassle.