You say that as if you don't know?  Closet-fatty?  Hiding behind your pork-snacks? I wear [S]mall in T-shirts and that's easy because they're never out of stock.  For shirts/jeans/jackets we get sized by inches so again it's easy to find things on the low end.  But it has to be said some of the local shops don't stock things small enough for me all the time - they tend order more of the mid/high-sizes.  Usually returning the next week is enough to get me sorted though.