Stern said the division of Smith's estate -- which could include a portion of her late husband J. Howard Marshall II's millions -- was provided for in a will executed in 2001, CBS reported. Smith has been in legal battle for years over her portion of Marshall's estate.
"Everything went to her son, Daniel," said Stern. "But now because Daniel is gone, and Dannielynn is her only child ... everything goes to Dannielynn. Everything. I am named as the executor."
Both Stern and Smith's estranged mother, Virgie Arthur, are seeking possession of Smith's body.