Sinéad Strikes Back At Miley

Photo: Facebook (O'Connor), Terry Richardson (Cyrus)

More drama unfolded between Sinead O'Connor and Miley Cyrus. In response to O'Connor's open letter, Cyrus posted a series of old tweets written by the Irish songstress, as well as a picture of her infamously tearing up an image of Pope John Paul II on Saturday Night Live in 1992.

O'Connor, who was diagnosed with bipolar disorder, thought the blow was uncalled for and wrote back to Cyrus via her facebook account. This time the "motherly" advice took a more bitter turn.

"Taking me on is even more fuckin' stupid than behaving like a prostitute and calling it feminism," O'Connor wrote. "You have posted today tweets of mine which are two years old, which were posted by me when I was unwell and seeking help so as to make them look like they are recent."

O'Connor goes on blaming Cyrus for making fun of people with a mental illness and threatened Cyrus with a lawsuit if the former Hannah Montana star didn't remove her tweets.

Click here to read the full letter

Meanwhile, Cyrus tweeted that she "didn't have time" to write an open letter to O'Connor because of her own appearance on Saturday Night Live this weekend. In her second letter, O'Connor also reminded Cyrus that her gesture on the same show 21 years ago was a conscious stand to expose sexual abuse on children by Vatican priests.

O'Connor concluded her letter with "You could really do with educating yourself, that is if you're not too busy getting your tits out to read."Will Cyrus fire back on SNL? Watch the show on NBC on October 5 to find out!