Not one but three open letters to Miley Cyrus created a fued between the "We Can't Stop" singer and Irish singer-songwriter Sinead O'Connor, and according to Hollywood Life, Cyrus plans to slam her once more on an upcoming episode of "Saturday Night Live."

Though prior to their fued, Cyrus said her "Wrecking Ball" video was inspired by O'Connor's 1990 video for "Nothing Compares 2 U," any admiration for the singer seems to have gone out the window after receiving a number of open letters on Twitter and Facebook. In the letters, O'Connor urged Cyrus not to let herself become "prostituted" by the music industry.

"The music business doesn't give a s*** about you, or any of us," O'Connor wrote Thursday, according to the New York Daily News. "They will prostitute you for all you are worth, and cleverly make you think it's what YOU wanted and when you end up in rehab as a result of being prostituted."

In response to the initial letter, which was created on Twitter, Cyrus wrote, "Before there was Amanda Bynes...There was (O'Connor)."

Many took offense to her response, criticizing Cyrus for making fun of and belitting mental illness, as in addition to the Amanda Bynes reference, last year, O'Connor had a Twitter meltdown in which she hinted she might be suicidal.

To top it off, Cyrus also tweeted a photo of O'Connor on "SNL" tearing up a photo of Pope John Paul II in protest of sexual abuse in the Roman Catholic Church.

According to sources from Hollywood Life, Cyrus may take things one step further and bash the star on an upcoming "SNL" episode during an upcoming episode.

"The current plan is for Miley to go after Sinead O'Connor during 'Weekend Update' or her monologue and she will most likely rip a picture of Sinead O'Conner on SNL," the source tells Hollywood Life.

O'Connor has already demanded that Cyrus apologize for her insensitive response to her letters and threatened legal action.

*This article has been updated to note a few changes. 

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