Taylor Swift
Singer Taylor Swift arrives at the Teen Choice Awards 2014 in Los Angeles, California August 10, 2014.Reuters

It seems the feud between Katy Perry and Taylor Swift is getting worse by the day. After Taylor Swift reportedly took a shot at Katy Perry with her song "Bad Blood", Katy was apparently seen on a dinner date with Swift's ex boyfriend Harry Styles.

Perry and Styles were not snapped together but were spotted leaving LA hotspot Nobu on 18 September.

"Yes, Katy Perry and Harry Styles had dinner together at Nobu in Malibu late Thursday night. Just the two of them. They seemed happy, smiling and enjoying their dinner and conversation. They arrived separately and left separately. They looked like good friends and did a lot of talking," an eyewitness told HollywoodLife.

Styles and Swift dated each other in the fall of 2012 before ending their relationship in early 2013.

The couple had a messy public break-up and since then Styles has been linked to a slew of women, including Kendall Jenner, and now Perry.

It may be recalled that feud between Perry and Swift reportedly started after the former used the latter's back up dancers for her tour, according to the website.

Swift also said in one of her interviews that the purported brawl was due to professional reasons. She did not take direct shots at Perry but told Rolling Stone that, "It had to do with business. She (a frenemy) basically tried to sabotage an entire arena tour. She tried to hire a bunch of people out from under me. And I'm surprisingly non-confrontational – you would not believe how much I hate conflict. So now I have to avoid her. It's awkward, and I don't like it." 

Soon after Swift's Rolling Stone interview Perry took to Twitter and wrote, "Watch out for the Regina George in sheep's clothing..." The tweet could have been directed to anyone but many thought that it was directed at Swift. Regina is a character in "Mean Girls" who ruins everyone's life.

Moreover, it has also been reported that Perry and Swift are like "oil and water" and don't gel together. The two apparently have completely opposite personalities.