I purchased the 16C in both the black and beige, and they are a great fit. To give you an idea of my body, as I'm definitely not going to post a photo of me ;) I'm 169cm tall, usually a size 14 in clothing, 16B in bra, and 16-18 in briefs. I'm chunky through my lower abdomen and hips. The undie line has a rubber lining which stops the brief from riding up, which is A+. The length of the bodice is perfect so that the wires actually sit under my breasts, which is how I like them to sit. The garment didn't move on me the entire time I was wearing it, no need to hitch it at all. The cons are the hook and eye clasps at the groin. It makes toilet breaks more difficult. A press stud would be preferable. The bodysuit is also a thickish material, hence the shapewear, I guess, but if does feel like you're wearing your bathers under your clothing. I'm used to wearing a lace bodysuit, so the thickness of the material was a big change for me. I don't think this would be an everyday underwear item for me, like my lace bodysuits are, rather to be worn when I'm wearing a fancy dress or jumpsuit. Aside from that, the bodysuit is really good quality, well made, fits great, and the shoulder straps don't dig in.