Sinead O'Connor knows music and controversy.

So when Miley Cyrus told Rolling Stone that O'Connor's music video forNothing Compares 2 Upartly inspiredher Wrecking Ball, O'Connor figured it was time to weigh in.

In an openletter to Miley, O'Connor, 46, imparts advice, done in "the spirit ofmotherliness and with love."

O'Connor writes that she is "extremely concerned" that Miley believes it is"in any way 'cool' to be naked and licking sledgehammers in your videos. It isin fact the case that you will obscure your talent by allowing yourself to bepimped, whether it's the music business or yourself doing the pimping."

She warns, "Nothing but harm will come in the long run, from allowingyourself to be exploited, and it is absolutely NOT in ANY way an empowerment ofyourself or any other young women, for you to send across the message that youare to be valued (even by you) more for your sexual appeal than your obvioustalent."

O'Connor urges Miley to "pay close attention," as she says that the musicbusiness doesn't care about "any of us."

She continues, "They will prostitute you for all you are worth, and cleverlymake you think its what YOU wanted.. and when you end up in rehab as a result ofbeing prostituted, "they" will be sunning themselves on their yachts in Antigua,which they bought by selling your body and you will find yourself veryalone."

O'Connor also says that we live in a "dangerous world. We don't encourage ourdaughters to walk around naked in it because it makes them prey for animals andless than animals, a distressing majority of whom work in the music industry andits associated media. ... You are worth more than your body or your sexualappeal. ... Whether we like it or not, us females in the industry are rolemodels and as such we have to be extremely careful what messages we send toother women. The message you keep sending is that it's somehow cool to beprostituted.. it's so not cool Miley.. it's dangerous."