Mary Mary is an American female gospel music duo formed in Inglewood, California, in 1998. The members are composed of sisters Erica Atkins-Campbell and Tina Atkins-Campbell. Mary Mary first performed in local churches and gospel competitions in California and later as backup singers for several R&B acts. After signing to Columbia Records in 1999, they released their debut album Thankful (2000), which sold over two million copies in the United States and also earned a Grammy Award for Best Contemporary... [more on Wikipedia]