If you do choose to participate in sequin-mania this December 31, all we ask is that you do so responsibly. Because, in our opinion, sequins are like the foods at the top of the pyramid: One should enjoy them sparingly, otherwise they might get sick. In layman's terms: wearing sequins is all about the mix, and one shiny piece can look perfect when worn with a simple T-shirt, casual sneakers, or even a cashmere sweater.