Luke Bryan Surprises Fan Who Donated Kidney to Her Mother

Luke Bryan sure knows how to crash a party. He surprised one of his biggest fans after hearing she selflessly donated a kidney to her mother.

Lisa Hayes saved her mother Diane Taylor's life and to say thank you mom wrote a letter to 'Knock, Knock, Live.' The reality show was cancelled before Hayes' episode aired but Bryan wanted his fans to "see what a hero she is."

When Bryan knocked on Hayes' door she lost it! There were screams, tears and hugs for everyone. Not only did Hayes and her family get a ride to the show in Luke's tour bus, they were entertained as Luke played on his guitar.

"You're music has helped our family get through the times that were just so dark." Hayes told Bryan through her tears.

It was definitely a night Hayes didn't want to end. "I don't think anything could ever top this day."