I bought this shirt new, years ago, and never wore it. This shirt runs smaller than the other reformation clothing but I would say it's closer to size xxs/00. I can take measurements if needed. I am about 30/31in around the chest measurement and it fit me exactly without pulling but I felt that it was snug when I leaned over or anything so I never wore it. It's a beautiful top. Will add non-model pics tomorrow in the light.