Our favorite red-head street style star Taylor Tomasi Hill started it. But then it became major when Kylie and the other K's started waist training. And as you know, everything the Kardashians touch becomes a trend and that's how it is. Whether you opt for cinching Obi Belt or a corset top, make your waist a focus this spring. Our favorite? Scandi-chic androgynous shirts with corsetry details . They give just the right cool-girl vibe. Shop the look on Hook.