Marion Cotillard and boyfriend Guillaume Canet arrived at LAX with their son yesterday. Marion gave birth to Marcel in May and she's since been busy with multiple work projects. Marion was dressed up for a Dior commercial just weeks after welcoming her first child and more recently she's been filming The Dark Knight Rises. Production is taking place in Pittsburgh, PA, and we've seen Marion in action on the set of The Dark Knight Rises along with costars Christian Bale, Tom Hardy, and Anne Hathaway. Anne also sang Marion's praises during our latest I'm a Huge Fan series, gushing that Marion is so "cool and French." Marion will soon switch gears to promote her role in Contagion, which hits theaters in September.