Katherine Heigl: Anne Hathaway was scared

Anne Hathaway turned down the lead role in Knocked Up because she deemed the movie too radical, according to the movie's star Katherine Heigl.
Heigl, who is famous for her role in Grey's Anatomy, landed the role after Hathaway refused to take the part. But Heigl was only too happy to be cast, and was even delighted when audiences were shocked by graphic footage of a baby's head crowning during the movie's birthing scene.
She says, "I think Anne found the film a little too radical especially with the shot at the end! Seeing a baby's head poking through was a little strong but the reaction of the audience at that point was so extreme. They just screamed - especially the men!"