Don't be scared.
Lovato caught wind of the tribute, Tweeting Clarkson: "WOW WOW WOW.. @kelly_clarkson thank you SO MUCH for covering #coolforthesummer at your show tonight!!! BEST BDAY GIFT EVER!! *literal tears*"
Perhaps the back and forth will prompt the long-awaited duet between the two. Last year, Lovato mentioned Clarkson was one of her dream collaborations, but due to circumstances it just didn't work out... yet.
“We almost got to work together, but I was pregnant and she had asked me to sing. I totally was down, but it just didn’t work out,” Kelly explained this week to MTV News. “She was touring, I was super pregnant and not feeling well and it didn’t work out this time, but it totally will. … I love her; she’s so sweet. Every time we see each other, she’s always like, ’Kelly Clarkson, she’s so nice, and so awesome, we’re both Texans.’”