Her Adorable Video Went Viral, And After That, She Got A Huge Surprise

Last week, we introduced you to McKenna -- a four-year-old girl whose heartwarming video went viral after she was filmed serenading her mom to support her as she battles cancer.That sweet moment took the world by storm, but it left many wondering what else was behind the adorable performance. Ellen Degeneres was one of those curious people. To learn more about this precious songstress and her brave mom, she invited them to appear on her show. They were thrilled to be on the popular talk show, but they had no idea what else was in store. video-player-present Ellen never ceases...