Elvis Presley's grandson, Benjamin Keough, died over the weekend, a representative said.
"She adored that boy. He was the love of her life," the representative for the family added.
Lisa previously addressed the similarity and said, "Ben does look so much like Elvis. He was at the Opry and was the quiet storm behind the stage."
She added, "Everybody turned around and looked when he was over there. Everybody was grabbing him for a photo because it is just uncanny."
Lisa-Marie Presley's song "Storm and Grace" is about her son, whose middle name is Storm.
Presley gave birth Keough and a now 31-year-old daughter with her former husband Danny Keough. She also had twins from a different marriage.
Other details about his death were not provided.