I'm a guy, but I have a similar problem with a 50" chest. In crazy world this only makes me a large, I've even fit into a few mediums, and of course the shirts are all cut to either go straight down or to slightly bell out at the waist, so I either have to tuck them into my pants or have a lot of loose cloth flapping around my waist. It's just, wtf, I should be about the biggest size most places carry and I'm maybe the median.