It’s true you can never really go wrong with a little black dress (LBD). And stocking your closet with a few go-to options is one of the smartest ways to do your wardrobe right. Whether dressed up or dressed down, for work or for play, a good LBD is almost always appropriate. And easy. And sometimes you just need easy! But as we all know very well, the moment you realize you’re in need of a really good go-to dress is precisely the moment you won’t be able to find one. (Why oh why does…