Did this from start to finish today. Took what I knew from doing the slingshot bikini to see if I could get a similar result for the ever popular one piece. Using dForce should be able to give way better results for larger breast sizes. Not only that, but I usually could manage Breast Cleavage up to about 35-40% depending on breast size and still get good results.
Comes with a bunch of national-flag inspired materials for Iray.