Ashlee Simpson, as you are probably aware is the sister of famous Jessica Simpson. Her 'style' is cute haircuts and this is one of the cutest out there. It is the perfect style for all of... next picture

...the younger women out there, and all you really need to craft it is ample use of bobby pins. However, this isn't the only style that she has. In fact she has plenty of them. This is one of the simplest medium hairstyles she uses though and thus should be something you look into.