Luke Bryan and Carrie Underwood ran into each other backstage at Nashville’s Bridgestone Arena — a familiar haunt for two veteran country stars with more than 50 No. 1 hits between them. The singers were there to take part in a concert tribute to the late Toby Keith,

American Idol judge Carrie Underwood broke down in tears and admitted, "I'm not okay," during an emotional performance by a contestant. The 41-year-old country artist, who rose to fame after winning the singing competition in 2005,