The 35-year-old actress graces the cover of the August issue of Allure (via E!), where she's showing off her stunning smile and her nearly makeup-free face.
The "Most Wanted Man" star has been staying busy on set, starring in upcoming films including an untitled Cameron Crowe project with Bradley Cooper and Emma Stone and a reported return in the "Sherlock Holmes" franchise with Robert Downey Jr. and Jude Law.
McAdams has been in the news recently for one of her classic films, "The Notebook," which celebrated its 10th anniversary last month.
The milestone brought out new stories about Rachel and costar and former flame Ryan Gosling.
According to director Nick Cassavetes, the pair got into an explosive feud during filming -- and it got so bad, Ryan wanted Rachel kicked off the set!
"Maybe I'm not supposed to tell this story, but they were really not getting along one day on set," he said in an interview with VH1. "Really not. And Ryan came to me, and there's 150 people standing in this big scene, and he says, 'Nick come here.' And he's doing a scene with Rachel and he says, 'Would you take her out of here and bring in another actress to read off camera with me?' I said, 'What?' He says, 'I can't. I can't do it with her. I'm just not getting anything from this.'"
Clearly things got better, as the two went on to date in real life from 2005-2007 and briefly reunited in 2008.
While we love Rachel in "The Notebook," she will always be Regina George to us!
See the rest of the "Mean Girls" cast, then and now.