They look similar from the front, but the suit in the Stephanie 5 product pics has a thong back (http://cdn.daz3d.com/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/p/o/pop-up02_stephanie-5_.jpg), while the Jasmin suit has a lot more coverage. The Jasmin suit is a great bikini however; two nice features are the color randomizer, and the price: free. I use it a lot.
The v4 version has a thong back as well. I think they are the same suit just one was made for v5 and the other for v4 .. I was just wondering if the vr texture pack at rendo would work on the v5 version.
like this one .. it would give you much more options