Body Harnesses — Unlike the studded, spiky harnesses of years past, these modern iterations are meant to complement flowing, girly dresses. This is one of the few times we'll thank Fifty Shades of Grey for anything — but we're loving these subtle touches of fetishwear to take the sweetness out of ordinary separates.

BCBG Max Azria spring '13 Photo: Maria Valentino/MCV Photo; Jason Wu spring '13 Photo: Maria Valentino/MCV Photo