Ringless Christine Baumgartner seen for first time since Kevin Costner divorce

Kevin Costner’s estranged spouse, Christine Baumgartner, was seen out and about — with out her marriage ceremony ring — simply days after submitting for divorce from the “Yellowstone” star. The 49-year-old was photographed operating errands in Los Angeles on Wednesday after blindsiding her husband of 18 years by ending their marriage. Baumgartner was dressed casually…