Kylie Jenner's Waist Trainer Brand Is a Best-Seller on Amazon
Buy It! Sports Research Sweet Sweat Waist Trimmer, $21.95–$26.95; amazon.com The waist trimmer is available in sizes small to XX-Large, and the brand recommends you measure around the widest part of your stomach to find your perfect match. To put it on, simply undo the strap, wrap it around your back, and seal the Velcro over your belly. Reviewers say when you've done it right, the belt should feel snug, not restrictive. More than 36,000 customers have given the Sweet Sweat Trimmer a five-star rating. "I read a lot of reviews before I bought this product. I wanted to know if it burned i...