Lisa Marie Presley filed a lawsuit Wednesday against her former business manager Barry J. Siegel for whittling her $100M fortune down to $14K 'through his reckless and negligent mismanagement and self-serving ambition.'

According to The Blast, the 50-year-old Elvis heiress is suing Provident Financial Management for breach of trust, negligence, and constructive fraud for leaving her Trust in $500K credit card debt.

Siegel has countersued, the website reported Thursday, claiming Lisa Marie 'squandered' her own fortune as a result of her 'uncontrollable spending habits'.

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Legal woes: Lisa Marie Presley filed a lawsuit Wednesday against her former business manager Barry J. Siegel for whittling her $100M fortune down to $14K

Battle: According to The Blast, she is suing Provident Financial Management for breach of trust, negligence, and constructive fraud for leaving her Trust in $500K credit card debt

The You Ain't Seen Nothing Yet singer claimed Siegel sold 85 percent of her late father's estate 'in order to put himself in proximity to [the investor] and his celebrity circle.'

'[Siegel] placed her assets in risky ventures in hopes of attaining his own celebrity in the entertainment industry,' the legal docs read.

When Siegel's investments - including a $9M English mansion - failed, Lisa Marie claimed he began liquidating her assets to supplement the Trust income.

Presley previously admitted to being $16M in debt, mostly due to unpaid taxes from 2012-2015, last week in divorce documents regarding her estranged fourth husband Michael Lockwood - according to TMZ.

Broke? Lisa Marie, pictured in 2015, claimed Siegel sold 85 percent of her late father's estate 'in order to put himself in proximity to [the investor] and his celebrity circle' (pictured in 2015)

Siegel told The Blast Thursday: 'It’s clear Lisa Marie is going through a difficult time in her life and looking to blame others instead of taking responsibility for her actions.'

He went on: 'The 2005 deal she is complaining about now cleared up over $20 million in debts Lisa had incurred and netted her over $40 million cash and a multi-million dollar income stream, most of which she managed to squander in the ensuing years.'

In the countersuit filed by Siegel's company Provident Financial Management, it's claimed that Lisa Marie’s 'continuous, excessive spending and reliance on credit far exceeded what the Trust could pay her from income alone.'

The company is suing for $800,000 in damages.

Troubled: She admitted to being $16M in debt, mostly due to unpaid taxes from 2012-2015, last week in divorce documents regarding her estranged fourth husband Michael Lockwood

The ex-wife of Michael Jackson - whose mother is Priscilla - was only nine when 'The King' died age 42 in 1977, and she became joint heir to the estate with her grandfather Vernon and her great-grandmother Minnie Mae.

After their deaths, Lisa Marie officially came into her inheritance in 1993, and she still reportedly owns his 18-room mansion-turned-museum, Graceland, in Tennessee.

Part of the nepotistically-privileged singer's financial troubles also stem from the fact that she hasn't worked since concluding her Storm & Grace Tour back in 2014.

The Memphis-born belle was last pictured February 2 celebrating her 50th birthday alongside rocker Billy Corgan as well as her twins Harper and Finley, 9; (with Lockwood).

'Had such a lovely Birthday this evening with my Family @ Friends!' Presley tweeted to her 140K followers. 'Thank You everyone for all the LOVE and Birthday wishes!!'

1970 family portrait: Lisa Marie - whose mother is Priscilla - was only nine when 'The King' died age 42 in 1977. She became joint heir to the estate with her grandparents

Historic: Lisa Marie officially came into her inheritance in 1993 and she still reportedly owns his 18-room mansion-turned-museum, Graceland, in Tennessee