Frances Bean Cobain has accused her estranged husband of stealing her late father Kurt Cobain's $1 million guitar.

Frances Bean Cobain and Isaiah Silva in 2015

Frances Bean Cobain and Isaiah Silva in 2015

The 23-year-old visual artist has demanded her former lover Isaiah Silva, whom she married in 2014, give back the Nirvana frontman's instrument following their split in March.

Isaiah has claimed in legal documents, obtained by TMZ, that Frances gifted him the guitar, which Kurt used during the band's MTV Unplugged gig in 1993, as a wedding present but she has denied this allegation and now wants the iconic instrument back in her care.

However, the estranged pair aren't just rowing over the guitar as they're also squabbling over the money they think they're entitled to following the demise of their 21-month marriage.

Frances gained access to a trust fund in August 2010 when she turned 18 which is said to have included 37 per cent of her late father's estate, following his suicide in 1994 aged 27, and she's adamant the musician won't get his hands on any of the cash, although she will pay spousal support.

Frances married the Eeries rocker in a secret ceremony in June 2014 but things came crashing down shortly afterwards and the raven-haired beauty filed for divorce four months ago.

The pair, who don't have any children together, had been dating five years, four if which they were engaged for, before they got hitched away from the limelight.

Meanwhile, it's believes Frances is probably leaning on her mother Courtney Love for support throughout her divorce after they recently reconciled following a number of years of estrangement.

A source said at the time: "Courtney and Frances have had a strained relationship over the years, but after tons of fallouts they actually get on quite well now.

"Courtney is sad she wasn't there [when Frances married Isaiah] but she totally understands that Frances is her own person and she's happy to let her do her own thing."