The perfume is called "Mad Love" -- as in "You know it used to be mad love" -- and is a spin-off from Perry's 2015 scent, Mad Potion. It could just be a coincidence that the 31-year-old singer's new fragrance has the same name as a lyric from Swift's song "Bad Blood," which is widely thought to be about Perry, but that would be one interesting coincidence.
Or this could be yet another jab in the never-ending feud between the two pop stars.
The rift first came to light when Swift, 26, called out an unnamed female artist for "stealing" some of her dancers for a tour during an interview with Rolling Stone interview in 2014. Since then, Swift and Perry have gone back and forth with pointed comments to one another via social media.
Taylor isn't just feuding with other female pop stars. The chart-topper recently split from longtime love Calvin Harris and weeks later was photographed kissing actor Tom Hiddleston. The new pics prompted Calvin to delete all social media interactions with his ex, including the amicable breakup tweet he had posted.
The GRAMMY winner is also at odds with Kanye West and Kim Kardashian, the latter of which called out Taylor in a recent GQ interview, saying she likes to "play the victim" after Kanye's song "Famous" was released.
For more details on Taylor's Kimye beef, watch the video below!