We told you we'd keep you up to date on this all-important Internet feud.
Sinead O'Connor took to Facebook to post another open letter to Miley Cyrus, following Cyrus' mocking Twitter post directed at O'Connor.
"Miley ... Really?" O' Connor said in her second letter.
"Who the (expletive) is advising you? Because taking me on is even more (expletive) stupid than behaving like a prostitute and calling it feminism. 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. In doing so you mock myself and Amanda Bynes for having suffered with mental health issues and for having sought help."
"It is most unbecoming of you to respond in such a fashion to someone who expressed care for you. And worse that you are such an anti-female tool of the anti-female music industry."
All this came after Cyrus slammed the '90s star in a tweet comparing her to Amanda Bynes (who's getting help for psychiatric problems), and mocking O'Connor's own Twitter meltdown last year in which she hinted at feeling suicidal.
"Before there was Amanda Bynes ... There was (O'Connor)," wrote Cyrus, who prior to their feud told Rolling Stone that her nude "Wrecking Ball" video was inspired by O'Connor's 1990 video for "Nothing Compares 2 U."
Cyrus also tweeted: "Sinead. I don't have time to write you an open letter cause Im hosting & performing on SNL this week. So if youd like to meet up and talk lemme know in your next letter. :)"
In other words, she has a career to attend to, but might find some time to be bothered by this if Sinead O'Connor wants to track her down. Maybe O'Connor should show up at SNL and tear up a picture of Cyrus.