20/20 - Six months after the birth of their twins, Moroccan and Monroe (affectionately known as "Roc and Roe"), Mariah Carey and husband Nick Cannon sit down exclusively with Barbara Walters discussing intimate details of their struggle to conceive, Mariah's high-risk pregnancy, parenthood and the unique dynamic of their marriage. And for the first time, the world will see the faces of their babies, until now hidden from public view. The exclusive interview airs on 20/20 on FRIDAY, OCT. 21 (10:00-11:00 p.m., ET) on the Walt Disney Television via Getty Images Television Network. (Photo by DONNA SVENNEVIK/Walt Disney Television via Getty Images) BARBARA WALTERS, MARIAH CAREY, NICK CANNON
