For old stock, size up two inches for a classic fit, one for a skinny one. These are nearly all made one inch undersize. Current stock made at the new factory, from fall 08 on, will have 233m on the button or interior tags and is true to size, so if you wash cold you can generally buy actual size, for a fairly slim (but not a sufu) fit. The current denim doesn't seem to shrink a huge amount for the 47, the 55 seems to shrink more.
2/15/09 at 4:09pm