Lace Inset Long Sleeve Button-Up Top

[This review was collected as part of a promotion.] I bought the XXS at my local Madewell, that was the only one they had in stock, and it fit! I'm usually a size small (5'4", 34/B). The arm seems lined up with my shoulders, So I'd say it runs large. It's also a style that would look good drapey, so go your reg size for a flowy fit. I'd love to get the white as well. I would prob order it in the XS though b/c I'm still a little weirded out that the XXS fit. ha!