It’s also amazing how actresses in classic films managed to play “emotionally charged scenes” and never once bare their boobs.
I think it’s called CLASS.
It's called acting.
Acting the part of a fighter is different than simply filming a real fight. One requires acting, one does not. A good actor can appear to have been beaten, while any idiot can actually be beaten.
A woman baring her breasts to make the viewer sense a sexual scene, is using the tools of a stripper, not an actress.