How Rachel McAdams Almost Lost the Role That Became a Romance Classic

Long before Rachel McAdams became Allie, the filmmakers almost went in a completely different direction, including testing a well-known singer for the role. McAdams eventually won out, but it wasn’t a sure thing at the start.

"The Notebook" feels like one of those movies where the casting was so perfect, it’s hard to imagine anyone else playing the lead. But Rachel McAdams wasn’t a guaranteed choice at all. In fact, she was one of many actresses being considered, and the role could have easily gone in a completely different direction.

A Long List of Actresses Were Considered

Before McAdams got the part, several well-known names were in the running. The casting team looked at actresses from different backgrounds and levels of fame, including Britney Spears, Jessica Biel, Reese Witherspoon, Kate Beckinsale, Jane McGregor, and Jennifer Lawrence.

Biel said she really wanted the role but didn’t get it in the end. Witherspoon was reportedly considered too old for the character, while Beckinsale wasn’t the right fit after her chemistry read with Ryan Gosling.

McGregor also made it deep into the process and had a strong reading with Gosling, but the team still didn’t feel they had found the right match. Lawrence was ultimately viewed as too young for the role.

Britney Spears Got Surprisingly Far

One of the most surprising parts of the casting story is how close Spears came to getting the role. She didn’t just audition — she actually did a chemistry read with Gosling, which puts her much further into the process than most people realize.

The audition was taken seriously, and she was genuinely being considered at that stage. She later reflected on the experience in her memoir and said she was actually relieved not to land the part.

She explained that reconnecting with Gosling could have been fun, but that if she had accepted the role, she likely would have spent much of her time acting instead of focusing on her music career, and that wasn’t how she wanted to spend her time

How McAdams Ended Up Being Cast

Even with so many actresses in the mix, McAdams eventually stood out in a way the team couldn’t ignore. The film’s casting director, Matthew Barry, explained that “Rachel was just so strong that everybody was fighting for her,” and that she basically “came out of nowhere.”

She was so unfamiliar at the time that his first reaction to seeing her name on the schedule was, “Who the [expletive] is Rachel McAdams?” They even chose not to mention to director Nick Cassavetes that she had recently starred in "The Hot Chick."

Once she auditioned, though, the reaction shifted immediately. Her reading impressed the team so much that the casting director said “depression set in” because he wasn’t sure the studio would agree to make a $30 million movie starring two relatively unknown actors.

Still, he fought hard for her, and because Cassavetes had earned the studio’s trust from the success of "John Q," McAdams was ultimately cast as Allie.

A Movie That Could Have Looked Very Different

Instead, Rachel McAdams became Allie Hamilton, and her performance ended up defining the movie for an entire generation of fans. Knowing how close she came to missing out on it just makes that casting story even more surprising.