The Peek top's description states the striped sides are slenderizing - and they were NOT kidding! I'm so impressed with how this knit top fits and looks. I am a size 5 or 6 at 5'9", and chose the size 5. The fit is perfect, with just enough ease for my taste. The striped sides are kind of genius. They emphasize (or create) the impression of a flattering waist line. The knit is comfortable and so easy to wear, with no clinginess and a smooth line. I can see this top being a go-to come cooler weather.