I love the fabric of this tshirt. The only reason I say it runs big is because I thought it was a women's fitted shirt, and it seems more of a unisex fit. I ordered an XL wanting a relaxed fit, but it ended up being too big. I just dried it to shrink it a little bit. If you are a true 12/14 and have measurements similar to mine, I would suggest going with a large, and it would still have a loose fit to it.