Things are heating up in the feud between Taylor Swift and Katy Perry. The "bad blood" between these two female pop stars goes back quite some time, but was most recently reignited during Swifts public disagreement with female rapper Nicki Minaj. 

Swift stayed quiet following Katie's initial comments, but it seems she was only waiting for the right moment to exact her revenge. As Daily Mail reports, the 25-year-old took the stage in Foxborough, Mass. July 26 and she brought with her a few props that may look familiar. While singing her latest hit, "Bad Blood," which is said to have been written about Perry, Swift's backup dancers hoisted a stuffed shark puppet into the air. Many onlookers believed the shark stunt was a reference to Perry's famous Left Shark from her Super Bowl XLIX performance. Videos from Swift's seemingly shade-filled performance show the Grammy Award winning artist chuckling after noticing the shark prop, further fueling speculation. 

As we previously reported Swift and Minaj found themselves in something of a heated discussion on July 21. It all started when the "Anaconda" singer took to Twitter to air out her grievances with the MTV Video Music Awards nomination process. She told fans she felt the awards had a tendency to favor white female artists with slimmer bodies, which Swift felt was a direct shot at her. Minaj quickly shut down Swift's attempts to appear victimized saying, "I didn't say a word about u," but adding that she should also be using her platform to speak out about the injustices women, especially women of color, face in the music industry. Fortunately they were able to resolve their differences after Swift apologized for misspeaking, but not before Perry could throw her hat in the ring. The 30-year-old tweeted a subtle dig at Swift, calling the comments "ironic," and adding that she "unmeasurably capitalizes on the take down of a woman."

Swift never responded to Perry's cryptic comments. She also has yet to say anything about the left shark citing during her performance.