So to be completely honest, this two piece didn't fit me that well and I totally could've gone with a Small instead of an XS. I had both the top and the the bottoms slightly unzipped so that I could breath, for one, and so my skin wasn't folding over the pants, lol. I tend to go for an XS when I see it as an option, thinking it runs bigger, buuuut, I'd definitely suggest going for your normal size with this two piece. Other than that, isn't it so cute?! I love the look with the nude Louboutin's.