She's done it again! Only earlier this month Grey's Anatomy actress Katherine Heigl, switched her hair from a a russet aubern colour to dark muddy brown. For last night's ShoWest Awards held in Las Vegas she changed gear it up again switching to glamorous jet black. It also looks like she added some hair extensions to create the soft 1940s Hollywood wave. I thought it looked great! It's a long way from the early Grey's seasons of sporting bright blonde curly hair. Which shade do you think works best?