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And baby makes four!
A rep said in a statement Kurkova gave birth to a "healthy, beautiful baby boy."
"The baby joins his older brother Tobin who is ecstatic over the family's addition," the statement said. "Mommy and baby are doing well."
Kurkova, 31, had told E! News in September Tobin, 6, was "super excited" about becoming an older brother.
"Real excited, kisses my belly," she said.