I have a toddler so if I'm at beach or pool I'm up and down, running around like a chicken with its head cut off. I'm a lady who wants every inch of cheek fully covered without having to constantly pull it down. I'm 5'2 135-140lbs post baby and got a 10 (6 was recommended). If I hadn't sized up, the torso would not have been long enough- and really isn't even now. I'd love the band to hit just below my boobs but it is a couple inches below...I can only imagine how low it would be on a smaller size. I obtained the full cheek coverage I desired, at the cost of the top cups being too large. I'm a 32c and breastfeeding so my boobs are heavy and I wish it had more support. Yet it looks beautiful on and I can nurse in it, and the butt stays in place. So I'm still on the fence whether to keep it. In bikinis I get a small, tight top for support and a larger bottom for coverage. It's hard with a one piece to choose which area to sacrifice...an uncomfortable choice no matter what. Last summer I had support but had to wear short to cover my rear. Now I'll have rear coverage but the pain of saggy boobs whipping around. Ugh IDK.