First, that was a non-exhaustive list.
My exhaustive list. Yoga pants, cleavage, and potentially “other clothing” (which I left to prudential judgment). Refer to my above post.
Second, nudity is not intrinsically evil, it requires a proportionate reason. For example, we do not need to remove art with nudity. A doctor can look at a patient nude (but even he should not if it puts himself into proximate danger of mortal sin). And in the same way, breastfeeding has a proportionate reason.
Plus,
(1) it is a somewhat rare occurrence to see a woman breastfeeding (in comparison to women in yoga pants which are everywhere)
(2) in these circumstances men only see the back of a babies head, with yoga pants and cleavage you see much more
(3) men should practice custody of their eyes regardless of what causes them to lust (even if it doesn’t cause the majority of men to lust). But modesty standards are based on what applies
to the specific society in general, not to a specific individual man.
(4) women should dress modestly, unless there is a proportionate reason justifying the exposure. You cannot walk around naked, but you can be naked for a medical exam. You can be naked in a locker room, but not in public. Similarly, no yoga pants in public.
Most important:
I disagree profoundly that it is “cultural conditioning” that is the primary factor putting “lustful suggestions” into men’s minds. It is biology, the same nature and biology that makes men sexually attracted to women.
(1) Studies have shown that there are universal beauty standards that apply cross culturally (facial symmetry, etc). This proves that male attraction has a biological component
(2) Homosexual men have different sizes of different brain regions compared to heterosexual men. And a study even was able to predict sexual orientation based on facial features better than one would expect by random chance
(2) Studies that have looked at arousal patterns in men. I fully realize that showing men erotic images is highly immoral, but I have to resort to these studies to demonstrate my point. The study showed that how men responded to visual stimuli was entirely predictable: their eyes were laser focused on just a few regions of women’s bodies (the regions that should not be displayed in public, regardless of culture, without a serious reason)
(3) Pornographic content is made for men. It rarely shows the whole person, but is laser focused on genital regions (because men are hardwired to lustful suggestions when seeing these regions of the body)
(4) nature alone can put so many suggestions into the typical man aged 18-24’s brain, that, even if he was only culpable of a small percentage of those thoughts, from suggestions/ nature alone, many men can potentially commit so many mortal sins that they cannot count the number that they committed the next time that they go to confession!