Any woman that has control and makes choices over her own body. Wheather she shows skin or doesn't show skin, or whether she chooses to sleep around or not to sleep around, any woman who is making decisions about her own body. Lots of people (mostly men) get angry at feminists for reclaiming the word 'slut' as a positive thing, as they don't like the idea that the have control over there own actions, and see woman's bodies as objects for there use to be sexualised.
Basically when it comes to sex there are double standards for men and woman
Boy 1: That girls such a slut going around showing her body in that way, and I heard she slept with 4 different guys this week.
Girl 1: Yes I think its amazing that she dresses to make herself feel confident, and makes choices about her own body seeing as her body is her own. It's so good to see she is able to enjoy sex as a woman in a world where sex is advertised for mens pleasure rather than woman's.
Boy 1: Your just a femi natzi, she's dressed half naked she has no self respect, and sex is advertised for woman as well as men that's just a lie made up by all you femi natzis.
Girl 1: Steve I don't think you can talk, you think a woman can get off from a few strokes of the breast and jamming your penis into her learn better sex, also put your t-shirt back on you have no self respect, I can see your nipples.