If you are still casting about for that single perfect trend-encompassing piece for fall, we may have found it. It’s not flashy, or trimmed in feathers or fur. It doesn’t scream “I’m a fashion victim.” It’s simply a button-down jacket. But this bit of fabric encompasses three of fall’s top trends. First, it’s gray, which is the color of the season. Second, it’s got a cinched waist, which graced numerous runways last spring when designers presented their fall collections. And third, it’s got a bow, which is very, very chic. The downside is that it’s not cheap at $895 from Barneys New York, but if you can’t afford this particular piece, let it serve as inspiration as you set out in search of fall apparel additions. For example, we found a similar, lovely gray textured jacket by Semantiks at Nordstrom for $128.