[chryuop]

I am not too much into informal Japanese since all textbook I have "worship" the ですます. Can you actually add the の directly to a name to make it as a question? I thought you still need the copula だ which in this case becomes な. クリスマスライブなの. I think it actually might be a possessive. As a title of a blob it might introduce what the blob is about. Not knowing what this Christams live is and what the blob is about tho we can only throw on the plate a huge amount of wild guesses.