What to do with this tour t shirt?

So I attended the show in Cardiff and bought this t shirt, loved it but its too big for me, so I'm not sure what to do with it as it looks ridiculous when I wear it like its a nightshirt!

went on eBay to look for it in a smaller size to find two people selling them for nearly 3 times the price and gave up on that idea, so not sure what to do looking for advice.

  1. eat more cake so it fits me better (I like this option however the rest of my clothes will become too small)
  2. wear it anyway, oversized t shirts are a thing right? I've no idea im a 40 yr old man who has a if its comfy ill wear it mentality
  3. frame it as a keepsake for my wall although I've got some posters I didn't get the Cardiff one
  4. sell it on eBay (hate scalpers so don't want to become one, but £100 is mad)

https://preview.redd.it/3bj6r14rkjpd1.png?width=617&format=png&auto=webp&s=2c6773524093056428452cc385387205b61d78b0

Edit it to add image

Edit 2- thanks everyone for the sugegstions im going to "Risk it for a biscuit" and wash it on hot!