Anne Hathaway was slated to star in the comedy Knocked Up, taking the lead role from Katherine Heigl. But the actress ultimately walked away from the project because of a very specific scene.
Released nearly twenty years ago, in 2007, Judd Apatow’s beloved comedy, with Seth Rogen and Katherine Heigl at the center, could have looked completely different. Knocked Up almost featured Anne Hathaway, fresh off the breakout success of The Devil Wears Prada from the year prior, who had been initially cast to play Allison, a driven woman who ends up pregnant by a reckless, immature stoner.
Today, fans of the film can hardly imagine the cult comedy with anyone other than Katherine Heigl in the lead, but it could have been different if a single sequence hadn’t frightened the Hollywood newcomer of the moment. Seth Rogen recently confirmed the details of this pivot, details long whispered as rumor.
Anne Hathaway Threw the Baby Out with the Bathwater
It was during the promotional tour for The Invitation that actor Seth Rogen (whose series The Studio made waves in 2025) confirmed the details about the reason Hathaway left the production of Knocked Up. According to his remarks on The A24 Podcast, it was the famous birth scene that posed a problem:
“It could happen for a thousand and one reasons. But in my memory, it’s the one they gave me. The famous presentation of the head of the baby isn’t easy. She didn’t want the head’s exit to be visually explicit, even if she would have had a stand-in.”
According to Rogen, it was specifically the moment when the baby begins to emerge that would have been too graphic for Hathaway, even though nothing so explicit would actually be shown in the film. The actor seems to understand that the intense context of the scene may have deterred the actress:
“Daniel Day-Lewis wouldn’t have done it either. It requires a serious level of commitment, even if it’s not real. But she didn’t want… she told herself it wasn’t her thing. Maybe she thought, ‘I’ll stick with his version, the exit of the head.’”
Seth Rogen does what he can to put himself in Hathaway’s shoes and stresses the challenge that filming that scene would have posed. Yet today, this blockage seems somewhat superficial, given how common birth scenes are in modern films, and sometimes with images far more frontal and explicit than in Knocked Up. And yet, thankfully.
That’s why one can’t help but cling to the thread Rogen offered: perhaps the blockage caused by this sequence was more of a pretext than anything else to hide other reasons Hathaway had for walking away with her cards and clout. In any case, Rogen doesn’t hold it against the actress for walking away from the top-billed role:
“She had a good instinct, she knew it wasn’t for her. And history has shown that she was right far more often than I have over the years. So I think this time too, she was probably right. […] And Heigl was brilliant.”
Among the actresses who approached the role of Allison, Olivia Wilde was also in the mix, appearing alongside Seth Rogen during the interview to discuss The Invitation, her new film in which Rogen and she share the screen with Penélope Cruz and Edward Norton. After auditioning, Wilde didn’t land the lead part of Knocked Up, which didn’t stop her from propelling her career forward in the years that followed.
The Invitation, which marks her third feature film, will hit French theaters on September 16, 2026.
