I have seen Stardust
...and you haven't.
I am not going to say very much about it at this point except that it is a good adaptation by Jane Goldman, smartly directed by Matthew Vaughn from one of Neil G's most delightful books. Everyone in it is wonderful, perhaps especially Michelle Pfeiffer and the luminous Claire Danes and the sweetly comic and passionate Charlie Cox - but I mean everyone, even the woman who played a drunk on the Bill, even R. Gervais, a man whom I don't find funny.
You have quite a few months to wait, and they will be worth it.