Streetwear Style Yellow Top

Bought this in Asia so the size tag is off. It says L but I’m usually a US XS/S. I think it’ll fit a medium as well since it’s loose on me. Pit to pit laid flat is ~20.5”. Some minor piling and possibly stain? It’s not obvious when it’s worn tbh. Color is mustard yellow. Love this top but I’m clearing out my closet. Smoke/pet free home.