Kukri ones were huge. I think my larges were massively too big. But I quite agree.
Kikri got sooooo much stick, but they made proper supporter shirts, the likes of which we have seem once thereafter, the anniversary black cotton. I don't consider taking the pro shirt and reproducing it in dri'-fit or whatever slightly less skin tight to be a supporters shirt.
Pro level reproductions, looks like pro but less tight, and supporters (cotton style) was the old kukri approach. I will buy a Wasps shirt or two most years if they are cotton things I can wear with jeans..