Reading find the truth post.
'Anne Lawrence, a transwoman reveals a secret world; anything coded female or feminine, can cause an “intense, perplexing, shame-inducing erotic arousal '
I don't think this is a mystery at all. So not sure why perplexing or shameful.
I think that it's obvious that the constant sexualisation of women is hand in hand with forming massive associations with certain clothes, and to a lesser extent but still there, makeup, hair etc with sex.
Has been all my lifetime.
Due to the endless 'sexy lady' imagery and the fact that the same 'look' is generally used.
Underwear obviously. Decorative, often skimpy knickers that are obviously designed to be viewed, not for practicality.
Bras basques etc that are designed to make breasts look bigger, pushed up, and a good amount exposed, again to the viewer.
Current sexy lady look. Hair makeup. That stuff.
Result. Those things are intrinsically linked to sex. Just seeing the clothes both men and women think sex. Women usually think that image is about sexy undies etc. Men think about sex itself.