Like this https:// wwwDOTgirlswithmuscleDOTcom/1432299/
She can be wearing any dress shirt and have visible abs. Folded sleeves is a plus
There is no reason to censor the GWM link like that; in fact if you don't it shows up as a thumbnail:
edit: ah nevermind, I guess you're doing it because of how new accounts can't post links.
I don't know of any others besides Lena:
Lena is such a goddess! She has the most amazing abs that a man can ever dream in a girl
Here are three of shots I know of....
I guess you could say that top pic is flannel...
I know it's not open flannel, but I think well worth the look!!
Definitely "open" flannel.