Christine Baumgartner feels that her estranged husband, Kevin Costner, isn't paying his fair share of child support and that the court-ordered $129,000 per month isn't enough.Baumgartner's legal counsel filed documents recently asking that the court reconsider their previous ruling on how much Costner is obligated to pay so that the lifestyle the children have with her will be equal to the lifestyle they enjoy when with their father.According to the court docs, obtained by ET, Baumgartner argues that, since their kids «fly on a private aircraft to go on luxury vacations when they are with their father, the Family Code dictates that Kevin should pay sufficient child support to Christine so that the children can go on comparable vacations when they are with her.»«This is true even if the child support payments also improve Christine’s lifestyle,» the documents state. «175,057 per month will not be sufficient to replicate Kevin’s lifestyle, but it will be sufficient to allow her to provide a lifestyle for the children which is relatively comparable.