EXCLUSIVE: Christine Baumgartner vows to keep up legal battle against Kevin Costner after child support ruling - as they prepare to go head-to-head over her $800k fees

Kevin Costner's estranged wife thinks the ruling that slashed her child support payments to $63,000-a-month is a 'complete joke' and has vowed to fight on ahead of a fresh court appearance over the pair's combined legal bill of $1.5million on Wednesday. Kevin Costner's estranged wife Christine Baumgartner has slammed last week's court ruling that saw her child support payments reduced to $63,000, as a 'complete joke' DailyMail.com previously revealed that Baumgartner, 49, moved into the luxury four-bedroom home on Friday – after a judge in Santa Barbara, California, slashed her child support payments Poll Do you support Christine's bid for more cash? The mom-of-three had been enjoying a temporary monthly payment of $129,000 and had wanted it bumped to $161,000 Baumgartner and Costner have been slugging it out in court since May when she abruptly filed for divorce, leaving the actor 'blindsided' In July Baumgartner was court-ordered to vacate the former couple's $145million lavish California mansion During cross-examination, Baumgartner was grilled over whether she intends to get a job to pay for her lifestyle and was forced to admit that she has only got as far as 'exploring' the idea. Costner and Baumgartner pictured during their September 2004 wedding at his Aspen ranch Costner's lawyer accused Baumgartner of making 'unreasonable' financial demands Baumgartner's lawyer spoke of the family's lavish lifestyle when in Aspen, Colorado - describing how the ranch has sledding trails that light up at night and have music piped through the trees, as well as multiple canoes and fishing lakes Baumgartner said the main house and the guesthouse have direct beach access, while the family home also has an infinity pool overlooking the Pacific and is decorated in California coastal style.