The pair hugged and kept their arms around each other as they waited in line to enter the famous Louvre art museum.
The pair also made an appearance at the San Diego Comic-Con in mid-July.
Mc Adams was 25 years old when she was cast as the mean high school queen bee Regina George, and she modelled her character on Alec Baldwin's performance in the drama Glengarry Glen Ross (1992).
Tina Fey, who co‑starred in the film and wrote the screenplay, has credited Mc Adams with teaching her how to act in front of a camera rather than an audience: "She's a film actor. And so I kind of learned that lesson from watching her." Later in 2004, Mc Adams starred opposite fellow Canadian Ryan Gosling in the romantic drama The Notebook, based on Nicholas Sparks' novel of the same name.
She played Allie Hamilton, a wealthy southern belle who has a forbidden love affair with Gosling's poor labourer, Noah Calhoun.
“Every relationship I’ve had with a coworker comes after the fact.” But Mc Adams couldn’t resist Kitsch’s charm — or Jake Gyllenhaal’s. ” A rep for Kitsch did not return our request for comment.The pair enjoyed a casual lunch with Mc Adams’ younger sister, Kayleen, and her husband, Evan Turner, prior to their pillow-buying expedition, with the foursome all smiles before they parted ways.Mc Adams, 37, wore a sleeveless black dress and mauve suede booties for the outing, while Linden donned a gray T-shirt and jeans for their day together.After saying goodbye to Kayleen and Turner, the couple spent some time in Good Night Naturals, where they tested out pillows and mattresses.The Spotlight actress and the Money Monster screenwriter were first linked in May, when they were spotted embracing during a vacation in Paris.In 2010, Mc Adams appeared in her first star vehicle, the comedy Morning Glory.