The last thing you want is to spend a beach day tugging at fabric, feeling self-conscious or having your tummy squeezed. Luckily, Amazon is overflowing with comfy yet flattering swimsuits that help you feel like a model. We dug through thousands of swimsuits to find these 15 slimming wonders that look and feel expensive, yet are secretly under $40. So what makes them so flattering? It's all about the design - think built-in tummy control, ruching and strategic panel placements that smooth and shape without squeezing.