EUC SOIA & KYO Sianne Lambskin Leather Jacket in black Medium but runs Small

Absolutely gorgeous leather jacket from SOIA & KYO! Exclusively available from Stitch Fix a few years ago. Pristine condition. It's a medium but imo fits like a small, especially in the arms (which do have elastic panels so some flexibility. The pro is that it's very slimming and can fit tighter than a traditional leather jacket thanks to the elastic! Finally admitting to myself that it's too small and letting it go 😢 Non-smoking home but I do have a cat for those with allergies.