'No B.S.' as Ladies of Country Celebrate 'Girls' Night Out'

Carrie Underwood, Wynonna and Naomi Judd, Jennifer Nettles, Martina McBride, Loretta Lynn, Miranda Lambert and Reba McEntire are being honored and performing in "Girls' Night Out: Superstar Women of Country," airing Friday night on CBS, and the ladies get candid exclusively with our Nancy O'Dell about the pressures of being a female performer, age bias, weight and more.

"We don't see each other an awful lot, but when we're together there's no B.S.," says Wynonna. "We ask each other, 'How are you feeling? How are you doing? Are you in love? Are you happy?' You know, I feel like there's a celebration that happens among women."

"I feel honored to have these gals as my friends," agrees Naomi, who adds that her age is a significant factor in how she's perceived. "When you get to be 65, you feel like people really are checking you out."

"I have to remind myself sometimes that I did not sign up to be a supermodel, nor did I sign up to eat like one," says Jennifer. "I signed up to be a singer."

"I think about [body image]," says Carrie. "I'm like, 'This dress, is there too much fabric?' People are going to think if I wear this … I'm hiding something."

Filmed at the MGM Grand Garden Arena in Las Vegas, "Girls' Night Out: Superstar Women of Country" airs at 9/8c on CBS.