So you want to know how to get thinner thighs or skinny legs? Here's the thing: You can't spot-reduce fat or target-tone certain areas of your body. That's just not how weight loss works. You can, however, develop the muscles in your legs to appear more firm, "toned," and, most importantly, to feel strong and capable. As a result, you may score the appearance of thinner thighs. (Don't believe it? Check out this leg slimming workout for yourself!