Frances Bean Cobain asks judge to order estranged ex to return her father Kurt's guitar worth millions

The legal battle over the late Kurt Cobain's guitar is still raging on between his daughter Frances Bean and her estranged husband Isaiah Silva.

According to TMZ, the 24-year-old heiress just filed documents asking a judge to order her 32-year-old ex to immediately return the 1959 Martin D-18E acoustic-electric.

The Eeries rocker claims the grunge princess 'gifted' him the Nirvana frontman's lefty six-string, which he's had ever since their 21-month marriage ended March 23.

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At war: The legal battle over the late Kurt Cobain's guitar is still raging on between his daughter Frances Bean and her estranged husband Isaiah Silva (pictured in 2014)

 Give it back! According to TMZ, the 24-year-old heiress just filed documents asking a judge to order her 32-year-old ex to immediately return the 1959 Martin D-18E acoustic-electric

But Frances insisted she'd never have given Isaiah such a 'priceless family heirloom,' which is estimated to be worth millions of dollars.

According to Page Six, Cobain - who's worth $100M - is currently paying Silva $15K of spousal support a month while the instrument issue is being resolved.

The raven-haired visual artist just landed a brand ambassadorship for Marc Jacobs' SS/17 campaign, which was shot by photographer David Sims.

Present? The Eeries rocker claims the grunge princess 'gifted' him the Nirvana frontman's lefty six-string, which he's had ever since their 21-month marriage ended March 23

MTV Unplugged 1993: But Frances insisted she'd never have given Isaiah such a 'priceless family heirloom,' which is estimated to be worth millions of dollars

Divorcing: According to Page Six, Cobain - who's worth $100M - is currently paying Silva $15K of spousal support a month while the instrument issue is being resolved

The Emmy-nominated producer 'wouldn't have done it with anyone other than' the 53-year-old designer, whom she met when she was two years old.

'I don't think I'll be modeling for anybody else for a very long time. This is 100 percent outside my comfort zone,' Frances told Vogue on Wednesday.

'I don't model unless I think the project is cool, and I don't put my name behind something that I don't genuinely believe in.'

'100% outside my comfort zone': The raven-haired visual artist just landed a brand ambassadorship for Marc Jacobs' SS/17 campaign, which was shot by lensman David Sims

'Honored': The Emmy-nominated producer 'wouldn't have done it with anyone other than' the 53-year-old designer, whom she met when she was two years old

Cobain - who protested at the D.C. Women's March - remains very close with her Golden Globe and four-time Grammy-nominated mother, Courtney Love.

When the 52-year-old rocker joked about 'alternative facts,' the dungeons and dragons enthusiast tweeted: 'HAHAHAHA my mom is cool #shesaysinthevoiceofbutthead.' 

Formerly estranged: Frances - who protested at the D.C. Women's March - remains very close with her Golden Globe and four-time Grammy-nominated mother, Courtney Love

When the 52-year-old rocker joked about 'alternative facts,' the dungeons and dragons enthusiast tweeted: 'HAHAHAHA my mom is cool #shesaysinthevoiceofbutthead'

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