Runs real slim. I'm usually a medium in tees and I got a large in a crewneck. I could have gone medium but it would have been a pretty tight fit. Doable, but I'd recommend a size up. For reference I'm 5'7, 135 pounds
http://www.yeezybay.com/air-yeezy-2.html
These are the updated version of the yeezybays.. From what I've seen it looks like the toe box is closer to being right but now the liner looks pink? It seems like they at least had that right the first time around