Following on from the bikini vs one piece debate, I'm a confirmed one piece fan but I find that the gusset rucks up (DH unkindly says I'm showing a camel's toe). I'm size 12 and even when I get one the right length it digs after about 2 minutes and gets worse when sitting down. I also find that all of todays models have gussets that are too narrow for comfort
Years ago, I had a really good M&S one that not only had a decent width to the nether part but it had a sort of foam pad built into the gusset (a bit like a built in waterproof pantie liner that did not go soggy). This was fab because it gave a perfect smooth look and kept the gusset flattened out and not scrunched up into a sort of rope that cuts into you.
I might go tank-kini but I prefer all in one and in the right one I look good.
Does anyone know of makes that include some sort of gusset support?