This is cool ! I'll definitely be buying this single, makes me feel all Christmassy.
My only gripe is that it's so obviously heavily inspired by "All I Want For Christmas", almost to the point of sounding like a rip-off. The chord progression, the lyrics, the melody... it's VERY similar! I hope her and her label are prepared for the accusations and comparisons which are about to come.
I use anyway, it's good! Her voice sounds great on it.