Remember the Little Girl Who Serenaded Her Mom Battling Cancer? You Have to See What Happens Next!

When we first saw the video of 4-year-old McKenna singing Martina McBride's "I'm Gonna Love You Through It" to her mom who is fighting stage four cancer, we didn't think it could get anymore emotional — we were totally wrong!

After McKenna's powerful tribute reached over 27 million views, Ellen DeGeneres invited her on the show to sing to her mother, Diana, and her grandmother Dee. But when McKenna walked onto the stage holding Martina McBride's hand, it officially became tear time. Alongside McBride, the precious little one performed a heartfelt duet in front of a huge live studio audience, but that didn't faze her one bit — she only had eyes for her mama.