Marion Cotillard toted her 1-year-old son, Marcel, into a SoHo hotel this afternoon. The little guy celebrated his first birthday on May 19, just before Marion traveled to France for the Cannes Film Festival. She was there to promote her project Rust and Bone and made multiple appearances for the movie including a grand entrance at the red-carpet premiere in a Dior gown. It wasn't all about acting, though, since Marion chatted about Marcel during a press conference, saying of her child, "There is this human being that I love more than anything, and who needs me." The actress will soon switch gears to her next big-screen effort when The Dark Knight Rises hits theaters in July. For now, though, she's working on Blood Ties, directed by her husband, Guillaume Canet, along with costars Clive Owen and Mila Kunis in the Big Apple.