Marion Cotillard Gives Birth To Son

Marion Cotillard attends the "Little White Lies" Premiere held at Roy Thomson Hall during the 35th Toronto International Film Festival in Toronto, Canada, on September 11, 2010 -- Getty Images

It's a boy for actress Marion Cotillard!

The 35-year-old actress and French actor-director Guillaume Canet, 38, welcomed son Marcel on Thursday night in Paris, a source told People.

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"Mother and baby are fine," the source told the mag, adding that the Oscar winner is "very happy."

The "Little White Lies" co-stars began dating in 2007 and announced they were having a baby together in January.

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"They haven't disclosed any plans concerning marriage," another source told the mag in January.

Cotillard, who is currently starring in Woody Allen's "Midnight in Paris," will also co-star with Christian Bale and Anne Hathaway in the upcoming "The Dark Knight Rises," slated to hit theaters in July 2012.

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