I don't even think of slut as a derogatory term to tell you the truth. To me a slut is just someone that has a lot of casual sex with a lot of different partners. I honestly could care less if a girl is a slut, in fact I have a lot of close friends that are quite promiscuous. If you wanna sleep with someone, or a lot of someones, power to you. It's sluts that have no conscience that really grind my gears. Like girls who constantly hook up with their "best friends" boyfriend, then brag about it to whoever will listen. Sleep with whoever you want, but don't be a bitch about it.
Lady pimps is a much better term I think
Do we really even need the qualifier 'lady'? We're all pimps, men, women and children.