5 Brutal Celebrity Feuds 1000 Views 5. Taylor Swift and Katy Perry What started this feud? A back-up dancer? John Mayer? We may never truly know. Once seemingly friendly (as seen above) the feud surfaced in 2014. Since then, well, let’s say they have some Bad Blood. Pages: 12345Next See more Previous article Top 10 Funniest Trump Memes Next article Remembering Musicians We Lost in 2016 Leave a Reply Cancel reply Your email address will not be published. Required fields are marked *Comment Name * Email * Website Save my name, email, and website in this browser for the next time I comment.