I have to take back my glowing reviews of the thermals and the tip to size up. I wore the crew neck stripe one today (size small) and it has stretched out at least a size, or more. It is unbelievable! I put it on this morning and it fit, and now at 6:00pm it is a sack and looks pretty awful. I am really disappointed.
I'm going to take the henley one I haven't worn back for my regular size (XS) and see if that helps. I am also going to try to shrink this one back to normal and salvage it. Will report back with results!
I am wearing the black and cream striped one today and love it! I will have to see how much it "grows" by the end of the day. I got a medium but may get others in a small if there is alot of stretch. I love these tops and that they are thicker than other ones.