Kelly Clarkson got sick during season 20 of, she knew just who to turn to!On Monday's episode, previewing the start of next week's Battle Rounds, the celebrity substitute was revealed to be none other than....Kelsea Ballerini!«Just pretend I'm Kelly,» the country star says in a promo for the upcoming shows, proving that she's got Kelly's spark when it comes to landing steals taking shots at fellow coach Blake Shelton: «Hey Blake, have I ever told you that you look like my dad?»«Thank you so much @KelseaBallerini for sitting in for me while I was feeling under the weather!» Kelly shared on Twitter on Monday. «I know my team is in great hands with you!!!
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