Black and Floral

James has roped Sirius in to a dinner party with Lily's muggle sister, as he's best man and Lily is hoping Petunia will agree to be her maid of honor. Lily is praying the evening goes smoothly. James is hoping that when things go badly- because they will- it will be Sirius's fault instead of his. Sirius- Sirius is puzzled. Petunia was supposed to be the devil incarnate, according to James. Sirius sees something different.
(I'll update daily, probably, as I've recently come into some free time. I'd predict an end result of around 15000ish words and unevenly long chapters, just so you know what you're getting into.) Finished!