Sizing for different brands

[JamesSwim]

One swimwear shop clerk told me that if the suit doesn't stretch, like a nylon suit, buy one or two sizes larger from same brand than what works for lycra/nylon for regular swimming. (may be different for competition or water polo where you want a tighter fit). But most suits now, even PBT poly has some stretch, but a different amount of stretch than lycra. I don't see too many 100% nylon.

Others posting here are right about how you get surprised with suits that fit even if they don't seem to. It seems to be more than just the waistband -- the leg binding, where the seams are (center seam, side, etc.) all seem to make a difference.

I guess you can just find one that you like, and stick with it, but it's nice to try some new ones too.