A celebration was the same thing as a party .. and Sirius Black absolutely loved parties. Really. He did. It made sense too. After all, what better place to let loose? Have fun. Relax. How anyone disliked parties was beyond him. Of course, he had expected to come to the Great Hall with his mates, but the combination of his impatience and his inability to locate any of them, brought him to the hall before he had rounded them up. They could meet him here later if they wanted and if they didn't turn up, Sirius would just have to give them a talking to. Either that, or he'd have to talk up the dance to make them think they had really missed out.
When he did turn up though, he wasn't in the appropriate attire st all. Sirius had decided that trousers and a t-shirt would be quite alright. Dress robes were insanely boring. And uncomfortable. And, in general, terribly itchy. He had absolutely no idea why they were still in style. It defied all logic. Slipping into the hall, he immediately made his way over to the table with the food. Sweets were really what he was looking for, made all the more apparent as he drummed his fingers on the table, eying the food before spotting chocolate. Brilliant, snatching a piece up, he turned around and looked around the hall to see if he recognized anyone.