Gospel singer, reality television star, and best-selling author Trecina "Tina" Atkins-Campbell was known simply as Tina Atkins when she and her sister launched one of the most commercially successful contemporary gospel acts of the 2000s, Mary Mary. After forming the group in 1998 with Erica Atkins-Campbell -- the Atkins sisters married unrelated men who both had the last name Campbell -- Mary Mary went on to earn two gold album awards and climb to the top of Billboard's Gospel Albums chart. The duo also released a series of books, including 2003's Transparent, then in 2012 th...