Redneckbook: RCA's Miranda Lambert graces the Feb. cover of Redbook and dishes about Twitter feuds, insecurity and maintaining a private life with Blake Shelton. "He's the sweetest guy," she says. "Like, he will talk to anyone, sign anything, take a picture with everyone. And if I don't stop it at some point, it ruins our whole night. I have to be the bad guy. The people are like, 'Oh, God, don't mess with her, she'll murder people.'" The issue hits newsstands Jan. 15.