France's most famous couple has welcomed a girl to their family. Marion Cotillard gave birth to her second child, a daughter, with her longtime partner, French actor and director Guillaume Canet, People reports.

Cotillard and Canet are also parents to a 5-year-old son, Marcel.

The couple, both cinema powerhouses in their country, first worked together on the 2003 film Love Me If You Dare, though they reportedly did not become romantically involved until 2007. Most recently, the new parents collaborated on the raunchy French comedy Rock 'n' Roll, which Canet wrote and directed, and in which both star as parodied versions of themselves.

Cotillard revealed that she was pregnant in September via an Instagram post in the wake of the shockwave-triggering announcement of her Allied co-star Brad Pitt's divorce from Angelina Jolie.

Cotillard put rumors of an affair with Pitt to rest while at the same time seizing headlines by announcing that she was expecting with her long-term partner.

"Firstly, many years ago, I met the man of my life, father of our son and of the baby we are expecting. He is my love, my best friend, the only one that I need," she wrote. "Secondly to those who have indicated that I am devastated, I am very well, thank you. This crafted conversation isn't distressing."

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