My level 13 Halfling Monk has an AC of around 35-40, which I thought was pretty good, but then a friend of mine told me that at the same level her monk had an AC of over 70 (I'm not sure what race she was though). I asked around in my guild to see if it was possible and the oldbies told me it was, though they didn't tell me how to get it that high.
Is there some feat or outfit or enhancement or something I'm not aware of that boosts it by that much?