I have that t-shirt too. Definitely fits a lot slimmer than the AW 13 pocket t shirts (I have the plain grey in used cotton, the grey and black striped in cotton wool blend, and the red and ivory thin striped in cotton and linen blend, all from AW13), and a little slimmer than the silk pocket t shirts that are carried over each season. It's really quite a snug fit on me in the upper body and arms, but very flattering all the same. Fabric is really nice (although strangely, there's not much give in the material at all, so putting the neck line over your head feels quite tight), and the stripe design is great (kind of looks different up close than from a distance). It's also not as sheer as it looks in some of the photos, I think due to the lighting used. Definitely recommended if you can get it, if not you might be okay with a small.