We all know trends come and go at a rapid rate — especially in the jewelry world. Last year was all about the septum thanks to Zoë Kravitz and Rihanna, and then fashion fell in love with the labret piercing by way of luxe brands like Dries Van Noten. But now, the belly button is back. With crop tops being a staple and festival-inspired body bling dominating our Insta feeds, people are hooked again on the '90s fave — and we're calling it now: the Spring '16 collections will totally reference 'em. Not ready to go back down that road? Here are two ladies who make it werk...