Hahah. Well I think I'm just a bit bigger than most of you guys, but Jil Sander shirts in a 36 fit me absolutely perfect. Raf and Raf x stuff is cut very similarly, but construction, country of origin and details obviously will differ. I dunno, I don't mind my Filippa K and Ralph Lauren shirts that don't fit me super slim. Not the nicest shirts in the world but they hold up nicely. Meanwhile, a cuff button fucking rolled off my BOO shirt the other day. Probably my second favorite shirt after my blue Jil dress shirt is an Opening Ceremony micro collar shirt I have. They did an oxford this season in the same cut which came in white pasty green and a patchwork print thing which you've probably seen on many of the big online boutiques, almost snagged one of them too. Fit is nice and slim but not tight, length and taper I think are more appropriate/less ridiculous then BOO. I have a Shades of Greige shirt that I think is more severe than my BOO, but it's a bit much sometimes, quality is also obviously not so hot. Margiela and Dries in a 46 fit me alright, similar to the way Filippa and Ralph do, slim and fitted but not quite as severe as Jil or Band. Prorsum in a 36 and sometimes even 38s can work for me, their sizing can very between pieces though. Lova's small fits me very nicely also, just remembered that I tried on one of their shirts at Odin a couple months ago and almost bought it, cut was something between BOO slim and what you would get from most luxury brands in terms of good fit without the intense slimness. I consider myself a true small though I think my jacket is probably a 36.5-37, I think you guys should be able to do a 44 or XS in most of the stuff I've talked about.