Christy Knowings, who appeared on the ’90s Nickelodeon variety show “All That,” has passed away. She was 46 years old. Family members told TMZ that Knowings passed away on Aug. 11 after being taken off life support after she suffered an asthma attack that left her with brain damage on Aug. 7. The outlet said […]Christy Knowings, who appeared on the ’90s Nickelodeon variety show “All That,” has passed away. She was 46 years old. Family members told TMZ that Knowings passed away on Aug. 11 after being taken off life support after she suffered an asthma attack that left her with brain damage on Aug. 7. The outlet said […]