Fashion takes inspiration from everywhere, not only places, not only nature, but also behaviours and feelings. If fashion is a reflect of our culture (and everything that comes with it) it should also reflect sexuality.
There have been different approaches into erogenous zones in both, female and male body during the history of fashion in the twentieth century, at least in western fashion because this zones are different according to culture.
Here it’s some inspiration:
Monica Belucci by Maria Picasso
Richard Gray
Fashion editorial shooted by Vitor Pickersgill
Vintage Versace fashion editorial with Claudia Schiffer