The trick to successfully stacking necklaces is to stick to delicate, simple pieces. Layering a chunky necklace on top of another chunky necklace can quickly look sloppy. Try and find thin chains with interesting details. Maybe one necklace has a charm, the other has a few small diamonds (or faux diamonds) and another is just a chain. Experiment with different lengths, but always keep in mind the neckline of your shirt — what works with one of your tops won’t necessarily work with another.