From the blog “Finally, A Feminism 101 Blog”, in their FAQ section.

Short answer: Slut-shaming, also known as slut-bashing, is the idea of shaming and/or attacking a woman or a girl for being sexual, having one or more sexual partners, acknowledging sexual feelings, and/or acting on sexual feelings. Furthermore, it’s “about the implication that if a woman has sex that traditional society disapproves of, she should feel guilty and inferior” (Alon Levy, Slut Shaming). It is damaging not only to the girls and women targeted, but to women in general an society as a whole. It should be noted that slut-shaming can occur even if the term “slut” itself is not used.

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As illustrated above, any woman who has had sex can be a victim of slut-shaming. A virgin can be a victim of slut-shaming. Indeed, as long as gendered slurs like “slut” continue to be weapons casually wielded against girls and women by both people from all walks of life, any female who acts in a way that another person doesn’t like is at risk for being slut-shamed.