I think n°4 is the best for you. You look very great in it. You have that kind of hourglass shape, with large hips and nice boobs. The band bras without strings over your shoulders do not look as great because of your chest, wich needs to be held up a little bit. I personally like the style of the bikini bottom, it adds a little fantasy without drawing too much attention. The plain, vivid color is a good choice because it highlights your curves without actually drawing attention from the perfection of your flawless body. I think it is the most appropriate for your morphology. I also like n°2 for the same reasons. Anyways, you look very sexy on every picture. Your body is hot and seems to have no imperfections, you have nothing to complex upon lol
I personally don't like the print of it, but I absolutely love the cut of the 1st one. 😯 I've never seen a bikini top in that bralette kind of style before. 3rd one is really nice too, finally a bandeau that doesn't look unflattering on the chest. The strappy detail looks really cool too yet simple at the same time. I'd go for 1 or 3; the rest look ordinary.
I think the tone of your skin would have a lot to do with choosing a bathing suit. All of them are very nice but if you are light toned then I would probably go with something that is not to light in color so you don't appear washed-out.
If you are fair skinned or tanned then you can likely go with either dark colors or lighter colors.