Kelly Clarkson has been officially declared 'legally single' in her bitter divorce battle with ex Brandon Blackstock. According to the court documents obtained by UsWeekly a judge signed off on the former couple's single status last month. The docs also state that their 'marital or domestic partnership status' will end on January 7, 2022. Stronger! Kelly Clarkson is declared 'legally single' amid bitter divorce with ex Brandon Blackstock... after judge upheld prenup protecting her $45M fortune Last month, it was reported that a judge had upheld the original prenuptial agreement in their marriage, meaning Clarkson's $45million fortune would be protected. In July, Clarkson had been temporarily ordered to pay Blackstock nearly $200k-per-month in spousal and child support. A report also revealed details into Clarkson's finances, showing that she personally earns $1,583,617 a month. The latest: The docs also state that their 'marital or domestic partnership status' will end on January 7, 2022 (Pictured, 2018) Clarkson, 39, filed for divorce from Blackstock, 44, in June last year citing 'irreconcilable differences,' which sparked a battle over money, custody, and property. The former couple - who married in 2013 - share two children, River, seven, and Remington, five. It was recently revealed that Blackstock is set to become a grandfather, as his eldest daughter Savannah, 19, from his previous marriage to Melissa Ashworth, is pregnant. He also shares son Seth, 14, with Ashworth. TMZ recently reported that Clarkson will keep the lion's share of their assets including the Montana ranch where her ex-husband is currently residing. Kids: Kelly is asking for joint legal and physical custody of her two children River, five, and Remington, four, in her divorce from Brandon after seven years of marriage. A judge is said to have agreed with Clarkson's attorney - famed divorce lawyer Laura Wasser - that the signed prenup had to be taken into account. Clarkson now has the right to sell the Montana ranch as she is the one who purchased it, according to the report. The ex couple's divorce has been 'bifurcated' meaning the end of the marriage has officially been declared. Per the report, Clarkson has been awarded primary custody of their minor children - River, seven, and Remington, five. It had originally been reported that Clarkson would pay 70% of her children's school fees and expenses but had refused to pay for the Montana ranch. It's over: (L-R) Seth Blackstock, Savannah Blackstock, Remington Alexander Blackstock, Kelly Clarkson, River Blackstock and Brandon Blackstock in April last year The judge had ordered that Blackstock carry the financial burden of his Montana ranch, that costs around $81,000 a month to run in expenses, though now it seems likely that Clarkson will sell it. Blackstock is currently living at the ranch, and is using it as his primary residence. It was also revealed that Blackstock was earning around $10k a month, while Clarkson was bringing home around $1.5M a month. Court documents obtained by TMZ confirm Kelly will continue to pay Brandon $150,000 per month whilst the divorce case continues in court as well as $45,000 in child support. The permanent specifics of any spousal support is still unclear. The singer has sold a staggering 25 million albums and 45 million singles worldwide in her career, and currently has her own hit talk-show. All rights reserved for this news site (dailymail) and under his responsibility