Vintage leather motorcycle jacket

this vintage Midnight Rider motorcycle jacket has a heavy leather exterior and a lightly padded nylon lining. There's some wear at the collar and cuffs. Never been crashed though. I bought it at one of the amazing Kensington Market vintage shops! it says size M but it's pretty small. I'm 5'5" and it fit me well when I weighed 125 pounds and generally wore a 4. I now weigh 150 pounds and wear a 6 or 8 top and I can't even get this jacket zipped any more as the heavy leather offers zero flexibility!