Frances Bean Cobain, the daughter of late grunge legend Kurt Cobain and Courtney Love, has filed for divorce from husband Isaiah Silva.

The two were engaged for four years before exchanging vows, but their marriage only lasted 21 months.

Frances, 23, is reportedly so nervous about Silva, 31, coming after her estimated $450 million fortune, she actually included a few lines in her divorce docs about her late father's estate. However, she IS open to paying Silva spousal support...

While Frances may be back on the market, she has been busy hanging with her mother. Despite a number of rough patches over the years, Frances and Courtney were spotted hanging out a few times this week in London. Maybe some quality mom time is just what she needs?