Celebrity Feuds

Taylor Swift and Katy Perry
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1. Taylor Swift and Katy Perry

These two sensational singers have been duking it out for a while now. While they shared a close friendship in the public eye for years beginning in 2008, their feud began soon after. Swift had famously been dating fellow singer John Mayer, but their relationship ended in 2011. Soon after Perry began dating Mayer, and their feud has lasted ever since.