CMA Country Christmas 2012, featuring Sugarland's Jennifer Nettles as host for the third year Artists on the two-hour special celebrating the season with songs and stories include Dierks Bentley, Colbie Caillat, Katherine Jenkins, Lady Antebellum, John Legend, Little Big Town, Martina McBride, Scotty McCreery, Jennifer Nettles, The Band Perry, and Keith Urban