Kathryn Hahn Reveals Hilarious Step Brothers Filming Secret

In a recent podcast appearance, Kathryn Hahn disclosed a little-known detail about the filming of the 2008 comedy Step Brothers. During the memorable scene where she and Adam Scott perform an a cappella rendition of "Sweet Child o' Mine" in a car, Scott required vocal assistance. A professional singer was positioned just outside the car window, providing Scott's part because the notes were particularly high.

Hahn also reflected on the challenges of acting with comedic talents like Will Ferrell and John C. Reilly. She confessed to a constant struggle to suppress laughter, which she described as a "panicked, crazy determination" to avoid ruining the takes. The actress mentioned that if the camera wasn't on her, she would often be on the verge of tears from trying not to break character. Separately, Hahn expressed her fondness for karaoke, confidently stating her ability to tackle any musical genre.