It's true that trends have a life cycle (though longer than most people think); they creep up slowly over seasons, have their moment and then fade into the background. If a trend is lucky, its moment can last for years; it can even become a new classic. We're predicting that, like the ballet flat, the low heel has the ability to be a trend for some time to come — and that its moment is here. High heels will always be sexy and always in style, but quite frankly, we're tired of wearing them. So let's enjoy some of our favorite shoes collected from recent runways and start planning our next beloved, well-heeled purchase.