I'm sure this is a pain that a lot of people on here can relate to: getting a vintage or second hand shirt in the mail and putting it on only to realize that the collar is super stretched out. Of course I know how to go about preventing the stretching of the collar in the first place, but I was wondering recently if anybody has some sort of miracle "lifehack" method for restoring a stretched collar to its original shape. I'll admit that I'm not too, too hopeful cause everything I can think of might be just as likely to damage the shirt further but I figured there was no harm in asking in case any of the oldheads and t-shirt wizards have a good technique. Thoughts?