The five-month-old girl could inherit millions in the long-running court battle over her mother's former billionaire husband.
The cause of death of Anna Nicole Smith, 39, who was found dead in a hotel room in Florida on Thursday, has not been revealed by an initial post-mortem examination, although medical examiner Joseph Perper said he had not ruled out an overdose and is waiting for the results of an a test.
When she was 26, Anna Nicole Smith had married 89-year-old Texas oil billionaire J Howard Marshall II in 1994, not long after being named Playboy's Playmate of the Year.
Her very wealthy husband died just 14 months later, and this started a battle over his estate between Anna Nicole Smith and Mr Marshall's son.
