Miley Cyrus was recently interviewed by Matt Lauer where speaks about her latest feud with "Nothing Compares 2 U" singer, Sinead O'Connor. In response to her interview, the Irish singer pens her fourth open letter to the "Wrecking Ball" singer where she demands for an apology for being referred to as "crazy" by Miley.

"My problem with you stems from your response to my first letter. Until you exposed me ( And Amanda Bynes) to abuse on the grounds of my having sought help (extremely coherently) to save my life, when experiencing suicidal compulsion as a side effect of a medication called Tegretol, I had no problem with you whatsoever," she wrote.

During the interview, Lauer asked her reaction to Sinead O'Connor's open letter. "I think she's an incredible artist, I think she's an awesome songwriter, and I was really inspired by her for my 'Wrecking Ball' video, which was what started the whole thing," Miley told Matt Lauer.

"I don't know how someone can start a fight with somebody who said, 'Hey, I really respect you. And I really love what you what you did.' 'You know what? You suck! I don't like you!' That was kind of crazy. But as I said, I'm a big fan of hers, so it doesn't really matter," Miley continued.

"It's all good. You can write as many open letters as you want," she added. "That's really what blogging is. I get open letters every day. It's nothing too new for me," Miley added.

Now that she asked for it, Miley has another very long open letter telling her that the first open letter was intended as a caring message. O'Connor expresses her disappointment to the 20-year-old former Disney star when her simple post on Twitter encouraged enormous abuse, both private and public.

"It is imperative that all suicidal people seek help. Whether they do so on twitter or anywhere else is beside the point. People must save their lives by any means necessary which do not involve hurting anyone. It is extremely dangerous to vilify those who are brave enough to seek help, as I did. Or to support in any way the public lynching of so called 'mad' people," she continues.

O'Connor ended her letter by telling the young singer to do the right thing, and she might end up saving lives by doing it.