Ariana DeBose mourns mother Ariana DeBose's mother has died at the age of 57 following a three-year battle with cancer. 20 August 2025 Ariana DeBose's mother has died. Ariana DeBose's mom has died The West Side Story actress has paid a touching tribute to her "favourite person, biggest fan and toughest critic" after Gina DeBose passed away on Sunday (17.08.25) at the age of 57 following a three-year battle with cancer.