Buttons on a Doublet

[Bugbear]

When I say that a coat is double breasted, I envision a coat in which the left front side is folded over the right side and is then buttoned with the buttons on the right side. Is that would you mean, Ted?

A Prince Charlie coatee and a regulation style doublet do not overlap.

My understanding was that double brested jackets are cut to flare open at the chest while fitting tightly around the waist, like on a mess jacket. Also, that many jackets do achieve this by having the overlapping front closure.

I think someone who knows more about the Highland jackets would need to answer the question because I don't know anything for sure beyond what I have read.

* I did read, after doing a search, that Prince Charlies and regulation doublets are double breasted, but that was in Wikipedia... which is not a good source to cite. *