Kim Kardashian and Taylor Swift's feud has been detailed in the past couple years with the reality star going as far as to slam her hubby's former enemy on social media. Now, she's taking her shade to subliminal heights by attending one of Taylor's personal rivals' concerts.

According to Radar Online, Kim attended Katy Perry's concert with her daughter North, recently. 

The site reports that Kim's decision to hit up the show with her daughter was a conscious move to get back at Swift after she seemingly dissed Kanye on her new album, Reputation.

Swift dropped her album on the anniversary of the MC's mother's tragic death: November 10. The song in question, titled "This Is Why We Can't Have Nice Things," is rumored to be her response to her infamous feud with the Wests.

"Kim and Kanye think Taylor is disgusting," a source told the site. "She said she didn't know it was the anniversary of Kanye's mom's death? There is no way that is true. She is so calculating."

Kim's reportedly joined forces with Katy, from a distance, to show she's firmly against Swift. Both singers have a well-documented strained relationship, with Swift reportedly writing her song "Bad Blood" about the "Roar" singer. Katy returned the favor by releasing her recent cut "Swish, Swish" in response.

Get more Kim K. news with BET Breaks, above.