Larry Birkhead and Howard K. Stern talk to reporters after attending the custody hearing of Anna Nicole Smith's daughter Dannielynn Smith at The Supreme Court. Nassau, Bahamas - 25.04.07

Stern filed a $60 million (GBP30million) lawsuit against Rita Cosby on Tuesday (02Oct07) over "false allegations" in her new tome Blonde Ambition: The Untold Story Behind Anna Nicole Smith's Death.

The book claims Stern and Larry Birkhead - the father of Smith's daughter Dannielynn - were lovers who plotted to get control of the late star's estate. Cosby, a former MSNBC correspondent, claims there is a sex tape to prove the pair were lovers.

But Stern's attorney, L. Lin Wood, has furiously denied the accusations.

Wood says, "Blonde Ambition purports to be a 'tell-all' book, but it can only be accurately described as a 'tell-all-lies' book.

"And I am sure Howard and the estate and everyone else involved is going to sue her, too. This is just nonsense...None of it is true."

Birkhead has denied a sex tape exists and has also threatened to sue.

Smith passed away earlier this year (07).

Source: WENN