Rihanna 's got a new mane that you're not going to want to miss. By Carly Cardellino Get the scoop ! Sign up for our newsletter and stay in the know. Please enter a valid email address . Success! Breaking News ! Cosmo 's Hair Color Guide for 2015 When it comes to hair color , nothing's as simple as black and white . Lucky for you, we know a thing or two about getting the perfect hue ! Rihanna 's got a new mane that you're not going to want to miss. By Carly Cardellino Get the scoop ! Sign up for our newsletter and stay in the know. Please enter a valid email address . Success! Which celebAnne Hathaway or Nicole Richielooked better with bleached locks? By Carly Cardellino Load More Stories