Who doesn't love a dress you can slip into with minimal effort, and boom, its a vibe!? I am a 2X/16W/DDD and went with the XL, however I am exchanging this piece for a smaller size (M) as the dress runs large (the XL fit more of a 20W body). I do not normally size down that much (let's put that disclaimer out there!), however, with it having a tie only, and I plan to wear this over swimwear, wanted a less than oversized fit. This is one of those pieces that is so versatile, you can go poolside or a night out and it works both ways!