I am dress obsessed right now. 'Tis the season after all, with consecutive holiday parties, Yankee Swaps, and dinner dates on the calendar. But why is that whenever I am on the hunt for a head-turning dress, there's a dearth in the marketplace? And then, of course, when I am not seeking one, I come across a knockout. Adding insult to injury, I then reason that I have no upcoming shingdig that warrants the knockout and leave it in my wake. Am I the only one who experiences this? From now on I will pounce when I find something I fancy. Ideally, it would be like Alexa Chung's YSL strapless frock, above. It's so simple yet high-impact--and best of all enduringly stylish.