Looks like Katy Perry and Taylor Swift still have some bad blood between them, because Perry couldn't wait to chime in on the Twitter fight Swift managed to get herself into with Nicki Minaj. On Wednesday, Perry tweeted: Finding it ironic to parade the pit women against other women argument about as one unmeasurably capitalizes on the take down of a woman...— KATY PERRY (@katyperry) July 22, 2015 Ironic indeed, as Perry is said to be the inspiration behind "Bad Blood," which was nominated for the MTV VMA for Video of the Year, as well as Best Collaboration.