Taylor Swift Performs At The 2014 iHeartRadio Music Festival In Las Vegas
Singer Taylor Swift performs during the 2014 iHeartRadio Music Festival in Las Vegas, Nevada September 19, 2014. Reuters/Steve Marcus

Taylor Swift may be BFF's with half the celebrities in Hollywood but there are two people she's reportedly not in good terms with. First would be her ex-beau, Harry Styles and second would be her alleged frenemy, Katy Perry. Now, recent reports claim Swift is "annoyed" over the dinner her former boyfriend and frenemy shared.

Earlier reports state that Katy Perry and Harry Styles enjoyed a quaint dinner together at Malibu. While it isn't anything romantic, the pair allegedly decided to have dinner together simply to "annoy" Swift. It reportedly worked according to reports by an insider to Heat Magazine.

"Katy's known Harry for years and she knew that going out and getting pictured with him would really annoy Taylor. And it worked," stated the source.

"Katy would probably find it funny to think of Taylor, at home Google-stalking her and Harry. They'd [Harry and Katy] have thought it was pretty hysterical that Taylor took the bait and used their innocent dinner as an excuse to reach out to Harry," added the insider.

The feud between Katy Perry and Taylor Swift reportedly started when the former took three of the latter's back up dancers. Ironically, the three dancers were originally from Katy Perry's camp before they jumped ship to Swift. While Swift didn't drop names as to who the frenemy was in her interview with Rolling Stone, Perry dropped a bomb on Twitter hinting that it could be her the country crooner was referring to.

Apart from the rumours involving the trio Katy, Harry and Swift, another rumour involves Rihanna. Sources claim that Rihanna and Katy Perry are teaming up to embarrass Swift at the upcoming MTV European Music Awards.

As for Swift, the country crooner is busy with the release of her fifth studio album entitled, "1989." The first single, "Shake It Off" taken from the album proved to be a hit. Swift is due in Australia for her appearance in "X-Factor" and to promote her latest fragrance, Incredible Things.