Why stick to blonde, brunette, or red, when there are so many other ROYGBIV shades to choose from? Check out these stars -- including Demi Lovato, Nicole Richie, Lauren Conrad, and more – who have tried rainbow-colored hair.
The Twilight actress went orange in April 2014 to prepare for her role in American Ultra. "The director of the movie told us what color to dye Kristen's hair," the owner of Maison de Cheveux in New Orleans told Us. "[Stewart] was very sweet and cool."