Country music icon Dolly Parton has died. She was 80. Parton’s nephew and her longtime head of security, Bryan Seaver, confirmed her passing in an Instagram video on Tuesday. “I am representing the Parton and Owens family today, announcing the passing of my Aunt Dolly Rebecca Parton Dean,” Seaver began. “Sister, Sis and Aunt Granny to one generation and Gigi to the next,” he continued. “This video announcement is something Dolly asked of me years ago before I fully absorbed it as a future reality.” “As her head of security, for more than two decades, a role my father Larry held before me,” Seaver said. “I have imagined the heaviness of…