For even more dramatic, look to Drew Barrymore...
Ombre Hair
The necessity of maintaining one's roots is a mandate that's widely respected and universally followed. But lately you may have noticed a shift in this tradition. There has been a increasing trend in a new hair color technique known as ombre hair color or melting. "Ombre" literally meaning gradation in French, which refers to the dark-to-light fade of color. This effect gives your hair a beachy, natural look and allows longer time between hair appointments (and who doesn't need that in this economy?!). Ombre can be soft and natural looking or more progressive and dramatic. Lauren Conrad and Kristen are some blonde examples, it looks great on both long and short hair.