This suit fits great. I am not worried about it moving around too much, as it has drawstrings on the top and bottom. It's cut kinda tiny, so if you want more coverage, this is not the two piece for you.
I do really like the suit but I would advise to buy a size bigger. I'm pretty lean and the bottom half is more than snug and doesn't cover as much as a suit should. Next time I will buy a size bigger. The bikini top is great because you can make it smaller or larger with the drawstring.
Cute suit, but don't like the draw string on top. Looks odd and is uncomfortable; I'd have to tie it too tight for it to stay down.