What Miley Cyrus Did: Responded to a tweet sent out by Jay Z that featured him calling her "an old worlds worst nightmare"
When She Did It: July 2013
Why It Was So Controversial: Because Miley is "an old worlds worst nightmare." While other female artists act a certain way in public, it's pretty clear that Miley is not going to follow their lead. Instead, she'll continue to say and do what she wants, which will ruffle a lot of feathers and have people up in arms constantly.
Photo Credit: Rolling Out