Whether it’s a belt bag worn across the body or a shoulder bag worn as a belt—whatever the iteration, the fashion world is experiencing “fanny pack” mania, and it’s spreading like wildfire. The first indicator was the accessory's omnipresence this past fashion month, appearing on countless influencers, editors, and even celebrities. Now, it's more accessible than ever, thanks to pretty much every notable brand marketing their own version of the belt bag. At this rate, we see it in the running for accessory of the year. Are you on board?