are you stretching it while putting on a hanger?
Do not washEww
Likely yesI don't know about the gravity and hanger thing mentioned in #7 but sounds plausible. But are you at least going from the bottom of the shirt to use the hanger? Took me a while to realize to do it that way. And by a while, I mean I'm pretty sure I started doing it that way either last year or this year. But I don't hang T-Shirts. Just collared shirts.
i've read that using hangers will naturally do this to t-shirts b/c of gravity.
fold your shirts. get really good at it, pretend you work at kohls or hot topic. there are 100 different ways to fold shirts really fast and easy, check out some yt vids.