I ordered a XXL, and I feel it is true to size. I was a little aprehensive to buy an XL since other reviews stated it ran a little small. The fabric is very thin but soft. I bought this shirt in the long sleeve black Eco and I love it. It looks just like the picture! I plan on buying more in different colors. I do know it's cheaper on Ebay & that's including the S&H. The next time I order this shirt, I'll get a XL instead. Definitely a nice shirt to go out on the town in.