Lisa Marie Presley has only herself to blame for her millions of dollars in debt ... so says her ex-manager who is now suing her for $800k he claims she owes him.
Lisa's ex-manager, Barry Siegel, filed new legal docs claiming Lisa twice squandered her father's fortune since she inherited it in 1993.
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In docs, obtained by TMZ, Barry claims Lisa's excessive spending is what got her into a financial mess and not his management of her trust.
What's more ... Barry is suing her to get the $800k he claims she owes him for unpaid work he did before she fired him in March 2016.
As we reported ... Lisa sued Barry back in February claiming she lost $24.5 million after her stock plummeted following an investment into the parent company of "American Idol" ... which went belly-up in 2016.
Lisa Marie Presley, an American singer-songwriter was born on February 1, 1968, to singer and actor, Elvis and actress and business magnate, Priscilla Presley at Baptist Memorial Hospital in Memphis, Tennessee, nine months to her parents' May 1, 1967, wedding. After her parents divorced, she lived with her mother.
When her father died in 1977, nine-year-old Lisa Marie became joint heir to his estate with her grandfather Vernon Presley and her great-grandmother Minnie Mae Presley.
Following the deaths of Vernon in 1979 and Minnie Mae in 1980, Lisa Marie Presley as an only child became the sole heir and inherited Graceland.
In 1993, on her 25th birthday, she inherited the estate, which had grown to an estimated $100 million. It is reported that Lisa sold 75 percent of her father's estate.
Lisa Marie Presley has developed a career in the music business and has issued three albums. She has been married four times, including to singer Michael Jackson and actor Nicolas Cage, before marrying music producer Michael Lockwood, father of her twin girls.