In a world in which the book is almost always better than the movie, there is always an exception. Stardust is one of them. Though Neil Gaiman actually wrote the screenplay for the movie, the book is so much inferior.
The movie was my favorite movie of 2007, and in my top 10 of all time. If anything, it should have been ‘at least as enjoyable’ as the movie. I actually didn’t finish the book. It was so convoluted that I couldn’t stand to.
Do yourself a favor. Pick up the the movie.