I have a 1A (Crew Neck) in the traditional Cream color, a 3A (Shawl Cardigan) in Bracken (Mauve), and a 6A (Cardigan) in Navy. I'm a 40 and sized up to 42 in each and they are still very slim. I could've sized up to a 44 and it still would've been a neat fit, but I like the way they fit. The only one that concerns me about showing through is the navy as anything lighter will show a bit in areas such as a bent elbow. If the sweaters fit looser, there would be no issue with undershirts showing through.
I can't say enough about the quality of Inverallan. They are among my most prized clothing items. I was lucky enough to pick up a small size of the 3A in Burgundy for my daughter who started college this year.
Bought the crewneck used off Styleforum and the cardigan NWT off Styleforum. These sweaters fits very tightly, yet many of the young SF's insisted on sizing down to get a "hip slim fit". Once they took possession and saw how tight they fit, there was a big sell off. The arms are also pretty short - works for me as I'm 5'9, but not so good for tall fellows.If you remember, where did you purchase yours? I've been wanting to buy one but I've only been able to find them from Endclothing. I read somewhere they are not restocking North American stockists till next year.