you'd have to be pregnant first.
the breasts can't lactate because the proper secretory glands don't develop until pregnancy.

oxcytocin or no.

Apparently, it's possible to induce milk production by intensely stimulating the nipples over a long period.

APA7 said:
you'd have to be pregnant first.
the breasts can't lactate because the proper secretory glands don't develop until pregnancy. oxcytocin or no.

Not actually true. Differences in hormone balance and some medicinal side effects can induce lactation in even virgin women, as can artificial inducement of such (either through medicinal therapy or frequent stimulation).

Google or Wikipedia for "induced lactation".