Saddle-mount Bar Hooks thread through a sleeve and yank one arm back into a Half Nelson wrestling hold to coerce these shirts into display posture. I see visual merchandising like this often with Jeans, less so with retailing shirts. Maybe someone was transferred in from “Slacks?”
And for more of an international flavor see commentary on this post in Spanish at…
theshopwindow.wordpress.com/2011/05/09/visual-merchandising-una-camisa-azul/
SEARCH “Jeans” for parallel merchandising and fixture constructs.