I have been keeping my eye on September the Line since 2018 when I asked someone I met in Mexico where she got her super cute bathing suit. I like their pieces a lot, and as soon as I ordered a paprika print top, I ordered these Ivory bottoms along with it. I am 5'4" ~160lbs with 39" hips and a 28" waist. I went with a medium and they fit perfect. I was nervous about the color and it being see-through when wet (jury is still out) but I contacted September the Line and they reassured me it's double lined so I gave it a shot. The elastic around the waist band is not very stretchy, which gives me all of the confidence in the world that these bottoms are not going anywhere when I get in the water. I'm SO happy I finally grabbed a set and will definitely be ordering more.