updated 10/04/2013 AT 11:00 AM ET
•originally published 10/04/2013 AT 12:30 PM ET
What started as an open letter from one former pop princess to a current one – in which a concerned O’Connor, 46, urged Cyrus, 20, not “to prostitute” herself – has quickly turned nasty.
In response to the letter, the “Wrecking Ball” singer took to Twitter and posted a series of old Tweets from the Irish singer, who according to BBC News, has bipolar disorder, and at the time of the Tweets was seeking recommendations from followers for a psychiatrist.
The response incensed O’Connor, who immediately penned another open letter, alongside other emotional responses, all of which were posted on Facebook.
“Miley Really? Who is advising you? Because taking me on is even more stupid than behaving like a prostitute and calling it feminism,” O’Connor wrote, continuing in another post, “Ms. Cyrus has today posted tweets of mine which are two years old and which were sent when I was ill and seeking medical help. She has done this in an attempt to deliberately cause me harm and hurt.”
She continued: “Ms. Cyrus’ lawyers will be contacted by mine regarding this matter. I confirm also that I do not at all support or condone the abuse or mockery of those who have been brave enough to openly discuss mental health issues. Mockery causes deaths. It is an unacceptable form of bullying.”