In a post, the singer shared a screenshot of Kim's cover and called her a see you next Tuesday. "What is this c**t doing on the cover of Rolling Stone?" she wrote. "Music has officially died. Who knew it would be Rolling Stone that murdered it? Bob Dylan must be f**king horrified. #BoycottRollingStone."
Sinead has been on the cover of Rolling Stone herself in years past, but we're guessing they won't be inviting her back again after she put them on blast. Kim has yet to respond to the insult herself, but we're guessing she feels like something like this about the diss:
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Gallery | Celebrity Feuds: Who's Throwing Shade?