The singer was part of Team Kelly back in Season 20.
The country legend said she was the first one approached for Shelton's spot 12 years ago.
The upcoming season marks the country star's final one on the singing competition.
Blake Shelton has the most victories, with nine winning contestants.
The country singer seems pretty certain he's on track for win No. 10 against whoever these guys are.
Blake Shelton now boasts nine winners in the reality TV series.
Part 1 of the finale airs Monday night (Dec. 12) on NBC.
The winner will be crowned on Tuesday's two-hour episode.
Meanwhile, all three of John Legend's team members were in the bottom four.
"It's mine and Blake's last season... I can't even get the words out of my mouth 'cause it sucks."
