Four-year old McKenna is filmed singing "I'm Gonna Love You Through It" by Martina McBride to her 23-year-old mom at a cancer support party. McKenna's mom is battling Stage IV Hodgkin lymphoma, a cancer of the blood.
McKenna's heart-touching performance was posted by The Ellen DeGeneres Show’s EllenTube. Watch as she sings her little heart out. Be forewarned, this video will definitely get you teary eyed.