Only reason why this film gets 4 and not three stars: it's just so pretty. Excellent effects, good actors and a lot of action. A bit fantastic, but it gets away, this is a fantasy movie. The adventure of the three musketeers meets the action of underworld and the effects of...stardust? Anyway on the bad side: the script should have been better, the dramatic moments cold have been directed to give far more value.
All in all: I enjoyed it, the 3D was ok (I have not watched it in 2D yet) thumbs up if you enjoy the not too serious movies or simply want a pretty 3D one!