Trix racing bomber style jacket

Has stains especially in the pink areas of both arms. Some staining to the white rabbit. It says medium but I think this may be teens or ladies.  I can put it on but not button the front.  I am a petite female so not sure. Please look at the size photos. Has some piling. I am still working on the stained areas will update if there's a big difference. Approximately 15" lying flat across bottom 19" top of shoulder to end of jacket 21" top of neck to bottom 18-19" armpit to armpit.  Hard to tell exactly looks to be under 19" somewhat. Please ask for any measurements you need.