Loosely Curled Long Hair
Ashley Greene has long brown layered locks coupled with a few sparse threads of lighter brown and her hair looks quite natural.
The ideal way to style long hair such as Ashley's is to use medium sized conventional rollers positioned vertically. Wait until your hair air dries before you take it down, unless you would like to save time under a dryer. When dry, take down and just allow your hair to fall where it may, with the exception of the top. The weight of your hair will loosen up some of the curl.
When you take the time to allow your hair to be wrapped in the conventional way, you will discover that your hairstyles will last longer and have less split ends too.
See also: More Ashley Greene hairstyles