Post Op escorts advertising as female

[GOSHH]

So let's just say if someone was on here advertising as an Independent female escort. When in reality they were a man who got a sex change and now has a vagina. Is there some sort of law against this or something along those lines ?
Because i remember some court case a while back where there was a girl pretending to be a boy so she could have sex with another girl.
By the way, it's all hypothetical ��

If this is a serious question pm me.
Peoples gender are not up for public debate and there is no law against having a vagina and being a woman.