i disagree. i find that a lot of juicy runs small, especially in the chest. primp thermals run kinda big, you can def. size down. but i think even when you stay with your regular size, it looks OK b/c i don't think they are meant to be form fitting like juicy. the regular henley style shirts fit mostly true to size (maybe very slightly big) for me. the tanktops ran very small in the chest for me.