Coach Blake Shelton must've been bubbling over with pride as his wife Miranda Lambert joined his final team member Dia Frampton on 'The Voice' finale tonight. The pair performed a duet of Miranda Lambert's wildly successful country ballad 'The House That Built Me.'

Dia Frampton, whose gown and hairdo were reminiscent of old Hollywood glamor, sounded beautiful as she harmonized with Lambert, who also looked beautiful in her dress. Singing into a metallic pink mic, Lambert exchanged verses with Frampton. Their voices paired beautifully together, but when Frampton sang by herself, her vocals didn't seem to match the country twang that the song needs to truly shine, though they were still very impressive.

After his ladies sang, Blake Shelton watched his wife as she walked offstage before giving commentary on Frampton's performance. Shelton was speechless at first, as he was very moved by the duet. He then said, "I know now why I get so emotional when I'm around you … Watching you stand there sing that song with my wife makes sense to me. You are family to me now … I love you and I'm so happy for you."