Katy Perry launched her latest perfume and we can't believe what she's called it

Theirs is a pop star feud for the ages.
In the rumoured rivalry between Katy Perry and Taylor Swift things just got a little shadier when the

31-year-old Firework singer released a new perfume named Mad Love.
Yep, that's a Tay Tay lyric from her Bad Blood single. Hmm.

According to reports Katy – who's currently loved-up with Orlando Bloom – chose the name as a follow up to her 2015 version called Mad Potion.

Katy has released her Mad Love

The pair were friends once

But considering Taylor's Bad Blood video was famously thought to be about their fight, is it a stretch to think of this as a sly dig?
Mirror Celebs has contacted Katy's reps for comment.

Katy and Taylor's big fall out was first revealed in 2014, with reports claiming Taylor's Bad Blood was inspired by her rivalry with the brunette after she revealed it was about a fellow female singer who had stabbed her in the back.

It was rumoured the Dark Horse singer had stolen some of Taylor's backup dancers to use on her own tour.

n an interview for Rolling Stone, the 25-year-old said: "For years, I was never sure if we were friends or not. She would come up to me at awards shows and say something and walk away, and I would think, 'Are we friends, or did she just give me the harshest insult of my life?'"
"She did something so horrible, I was like, 'Oh, we're just straight-up enemies.' And it wasn't even about a guy!"

Katy seemingly then responded to the interview, tweeting: "Watch out for the Regina George in sheep's clothing..." referring to the main villain in comedy Mean Girls played by Rachel McAdams.