A couple weeks ago Sydney was trying to put a shirt on after getting out of the tub. As frequently happens, her arm got stuck part way in and rather than backing it up and wiggling it it, she just forced it and panicked.
I explained that when your arm gets stuck, you just need to relax, back it up, and then try again. If you keep doing that it will go through.
A few nights later, her arm got stuck and while forcing it through the sleeve, she alternated stepping forwards and backwards.