'This Is Us' Shocker: [Spoiler] Is Pregnant!
Lambert and Shelton duet on "Draggin' The River" off Shelton's 2010 All About Tonight album. "It's about running off and getting married, ironically," Shelton tells Us. "She said to me, 'Man, that would be a really good duet.' After she said that, I never thought about it any other way."