Adorable 4-Year-Old Girl Sings To Mom Battling Cancer Live On Ellen [VIDEO]

Get your tissues ready.

Four-year-old-Mckeena is the latest viral video star thanks to  Ellen Degeneres sharing an emotional video featuring McKenna singing to her Mom, Diana, who is battling Stage four cancer. The video has over 27 million views.

All the best to Diana as she continues to battle cancer.