Mattel has launched a new line of black Barbie dolls with fuller lips, a wider nose and more pronounced cheek bones — a far cry from Christie, Barbie's blackThe "So In Style" line, which hit mass retailers last month, features BFFs Grace, Kara and Trichelle, each with her own style and interests and a little sister she mentors: Courtney, Janessa and Kianna. The dolls reflect varying skin tones — light...