Vintage T-Shirt Forum & Community Authentication Appraisals

I don’t know much about vintage tees yet, but I’m a huge MJ fan and came across this shirt. It’s a Giant by Tee Jays shirt, and in the limited research I’ve done so far, it looks like the tag gets replicated a lot on fake shirts so I thought I’d ask around. Any help would be greatly appreciated! Size is small, length is 27.5 in and pit to pit is 21.5 in.

Something is fishy here....first of all size S. Also why would a size S be 21.5" pit to pit? That's an L measurement. I think the double stitching it out of place, but would have to investigate to make sure - should be single stitched for a Giant Tee Jays.