The coach was left emotional following her final contestant Rose Short's performance of the Foreigner classic "I Want to Know What Love Is", and was so moved that she could barely speak when host Carson Daly asked for her feedback.
"I'm not ready. Oh my god, I'm crying," the "Sweet Escape" star said, hiding her face. "That was unbelievable. I'm so in awe of you. I'm so honoured to work with you."
"Cut the cameras!" she added, shooing them away from her. "Oh my gosh."
"It was moving, that's why you're crying. You are a gift," she told Short. "I don't care what happens on this show, you are so blessed."
The second part of "The Voice U.S." semi-finals airs Tuesday night on NBC.