I usually wear a 14 dress but followed the reviews and ordered a size up and got the 16-18. It was literally the cutest one-piece Ive ever tried on in my life. My youngest is 3mo and my oldest is a year older than that and I haven't had a chance to lose a lot of the baby weight, which I carry all in my flabby belly. This swimsuit was incredibly flattering. I cant stress that enough. Unfortunately, my boob size (at 34i) was too big for the 16-18 and I didn't want to go up one more size because the body size was already pushing it. But seriously, ladies, this swimsuit is worth it if you have somewhat normal dress proportions.