Kevin Costner and Christine Baumgartner’s divorce is getting messier by the minute. Baumgartner, a handbag designer, claims her movie-star ex told their three teenage kids about the split, without her participation, during a 10-minute Zoom call while he was filming in Las Vegas. Costner, 68, claims Baumgartner, 49, has refused to vacate their $145 million California mansion, in violation of their prenuptial agreement, and has charged $95,000 on his credit card since their May breakup. Baumgartner, who married Costner in 2004, wants $248,000 per month in child support payments, with Costner also covering the kids’ private-school tuition and other expenses. In court filings last week, she detailed Costner’s lavish 2022 spending, including $830,000 on gifts, $449,000 to join two beach clubs, and $46,000 on golf- and hunting-club dues—revelations Costner…
