I wasn't sure what size to get, Im 137 lbs and 53 with a 32 DDD at Victorias Secret (I know they size you larger than other stores, just haven't purchased a bra elsewhere in a few years). I got a size 8 but may have been able to pull off a 6. I have a short torso so I was a little worried about how it might fit based on other reviews stating that the crotch area was kind of long. It fits almost perfectly, its a little tight around the top of my chest but the cup size itself is perfect. Its a little loose around the small of my back but other than that, its not digging into my glutes or stomach like Ive seen in some pictures. I think if you have significantly large thighs, glutes, or breasts with respect to your waist size you may have to buy a larger size and modify the suit to fit but I think it would be worth it. The quality is really high too, I was very surprised. I think if you get it and it doesnt fit, its definitely worth trying a different size or modifying it. Its flattering and modest yet fun. Im excited to wear it this summer.