Though I'm not too well read on the subject I think this "Miley's finding her sexuality" thing is a result of the so called third-wave feminism?
See how women are finding their sexuality though. 50 shades of grey is a book about a female masochist that became so wildly popular women would read it in the subway. And it started as fanfic (?) from twilight, which shouldn't be a surprise. I've read many people thinking that's a celibacy-abstinence story but it seems more like an equally masochist story where the girl is afraid her much more powerful partner will devour her despite his love.
So women finding their sexuality is twerking and then phantasizing some guy beating them up. Which I guess is the same kind of sexuality you'd find in the average bedroom in the 50s or if not there, then surely in the halls of a roman emperor.
There is of course a huge difference between that and wearing short skirts but many women do aim at that and not just at being or feeling attractive. Some women have developed a very male-oriented view of their sexuality and this is much more prominent in the media than it is in actual life (so it will be getting more prominent in actual life in the coming years).
Rashida Jones is awesome!
...We shall never recognise equality with the peasant profiteer, just as we do not recognise “equality” between the exploiter and the exploited, between the sated and the hungry, nor the “freedom” for the former to rob the latter. And those educated people who refuse to recognise this difference we shall treat as whiteguards, even though they may call themselves democrats, socialists, internationalists, Kautskys, Chernovs, or Martovs.
V.I. Lenin