COSTNER EX GETS BY WITH A LITTLE HELP FROM HIS FRIENDS!

TV cowboy Kevin Costner is fighting tooth and nail with wife Christine over her money demands and their prenup, but the former handbag designer’s gotten support from some of his onetime Hollywood pals — including Sandra Bullock and Matthew McConaughey, spies dish.

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“Christine has gotten close to a lot of people she’s met through Kevin,” an insider tells The National ENQUIRER. “She’s very good friends with Sandra — who’s been through an ugly split or two herself — and quietly she’s been getting a lot of support from Matthew and his wife, Camila. 

“Kevin would love everyone to dump Christine now that they’re breaking up, but a lot of them are standing by her side!”