By the way, the appellations of "Argyle vest" meaning a 5-button vest, and "Prince Charlie vest" meaning a 3-button vest, seem to be commonly used in the Highland dress industry, at least by those suppliers I have had contact with. Most likely becayse a 5-button vest is typically worn with an Argyle jacket, while a 3-button vest is worn with a Prince Charlie.

I've seen 3-button vests worn with Argyle-cut jackets to nice effect, especially when made from black Barathea and with Braemar cuffs. But I don't know what I'd think about a 5-button vest with a Prince Charlie....