Hilary Duff hair is usually styled in layers that are long, we have never really gotten the chance to see Hilary Duff with short hair, but we are sure the day will come, it is probably just around the corner. Long layers come in handy for hair that is extra thin, because it adds the body that it needs. Layers also help with the blow drying process. There is no doubt that the long layers that Hilary Duff has is perfect and she is able to look good without putting much effort into doing so.