Demi Lovato shed tears after an X Factor contestant gave an emotional performance on Thursday night's episode.

Ashly Williams, a 24-year-old, whose mother was murdered when she was 14, took the stage to sing Whitney Houston's I Will Always Love You. Williams sister and several other relatives were present to support her audition.

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After the impressive performance, Lovato and the other three judges - Simon Cowell, Paulina Rubio and Kelly Rowland - gave Williams a standing ovation.

"I'm like speechless. I had chills all over my arms and legs," a teary-eyed Lovato said. "And I can feel it in you, I can feel that heart. And, guess what? There's a place in the market for you."

"You know what is so funny, you're saying thank you to everybody and it's beautiful and it's humbling," Rowland also told Williams. "But thank you baby girl for spilling your heart out in that vocal."

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And the hardest critic, Cowell, also said, "This is why we brought the show to America, to find somebody like you. Seriously, I think we just scratched the surface with you because I think that you are seriously, seriously good."

Season 3 has showcased some more exceptional talent thus far. After Lillie McCloud, 54, sang CeCe Winans Alabaster Box, all four judges gave her a standing ovation. The performance also made Rowland and Lovato cry, and the latter compared McCloud to the late Whitney Houston.

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"Every single part of this room you touched with your voice," Rowland also told the contestant. "You blessed us all, thank you."

Another memorable moment occurred when a couple named Alex and Sierra entered the stage. The boyfriend and girlfriend blew the judges away with their slow rendition of Britney Spears' Toxic.