A kind soul pointed out to me today that something didn't seem quite right with the sizing guide I'd posted and gosh darnit, they were correct; I had done a bit of an oopsie when converting some numbers, making the shirts perfectly sized if all of you were actual kobolds but not for those of us who are human sized.
I'd copied the inch size into the cm box... then, in my perpetual tired artist state, converted those numbers into inches.
Considering no one will have picked their sizes yet it's no biggy but oops, I'm so sorry about this!