Reynolds, who rose to fame for starring in Singin’ in the Rain, was taken to hospital from Fisher’s Beverly Hills house on Wednesday after suffering a stroke. She was 84.
“She's now with Carrie and we're all heartbroken,” her son and Carrie’s brother Todd Fisher told Associated Press from Cedars-Sinai Medical Center.
He said the stress of his sister's death was “too much“ for his mother to bear and she died on Wednesday.
According to celebrity news site TMZ, Todd and his mother were planning Fisher’s funeral when Reynolds was rushed to the nearby hospital.