Belt bags, waist bags, call them what you want, but bumbags are here to stay for 2018. When your outfit needs that special something-something, this accessory will do the trick. Follow Kendall Jenner's lead and strap it across your body or simply wear it around your waist. Bumbags will come in all sizes and colours for next season, so be on the lookout for the perfect one (if you don't already own one).