Allegations, fan speculation, and a mystery pregnancy—did real life spill into the Yellowstone set?
When Christine Baumgartner filed for divorce from Kevin Costner after 18 years of marriage, the whispers started instantly. The split was messy from the start, with Costner’s team insisting the divorce was “beyond his control.

Almost immediately, theories began swirling. Did Costner cheat? Why did Baumgartner’s legal team demand records tied to “extramarital relationships”? The questions snowballed—and became part of the drama.
Costner’s on-screen relationship with Summer Higgins (played by Piper Perabo) raised eyebrows.
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