actor Kevin Costner, has taken off her wedding ring after filing for divorce on Monday.

The couple had been married for 18 years

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Baumgartner cited "irreconcilable differences" as the reason for the end of their marriage

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She has asked for joint custody of their three children

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Cayden (15), Hayes (14), and Grace (12)

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A spokesperson for Costner confirmed the news of the divorce

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Costner has responded to Baumgartner's petition by also requesting joint custody of their children

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An insider revealed that Costner was "stunned" by the divorce

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but a friend confirmed that there were no allegations of infidelity this time around

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Costner was previously married to Cindy Costner

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the couple has three children together.

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