Good timing! Kristen Bell has just announced that she is engaged to When in Rome co-star Dax Shepard, which is perfect because the movie just came out! According to Us, Dax popped the question over the holidays. What a fun couple! "We were trying to one-up each other," Kristen says about filming When in Rome with Dax. "That's what we do at home, too. It's like, 'Wait -- watch me do this funny bit.' 'No, watch me do this funny bit!" Now we're really gonna have to see this movie!