Afield long sleeve tan burgundy button up shirt

Gently used Afield long sleeve shirt. Size 3, I’m not sure if that’s a European size or not, it’s 23 inches from pit-to-pit & 25 inches from the top of the shoulders to the end of the cuff. I get compliments on this shirt every time I wear it, but I’ve picked up some winter weight & have already given up fitting it again.