Unfortunately it depends on the wash. Some of them are tts, some are not. I have DPE (old multi, non-stretch) and I'm a 24/25 in those, although a 25/26 in Joeys. It would be better if you could try some on at a store before buying. I remember some people being really unpleasantly surprised after ordering Sammys in their regular size (I think wasntme was, a few months back)

And I think there was an older non-twist version of the Joey, now I can't remember the name (not the Billy)