Kendall Jenner and  Taylor Swift are reportedly feuding. Swift  did not show last night at Kendall's 20th birthday party.  (Photo: Mario Testino for Allure)

Kendall Jenner and Taylor Swift are reportedly feuding. Swift did not show last night at Kendall’s 20th birthday party. (Photo: Mario Testino for Allure)

Kendall Jenner threw a 20th birthday bash that included a slew of celebrity friends, many of whom are BFFs with Taylor Swift. But the singer apparently wasn’t invited to the bash, even though she was in Los Angeles and at a rival dinner just down the street.

Jenner may have been returning the snub for failing to make the cut for Swift’s “Bad Blood” video, which also included a ton of their mutual friends.

Swift is no fan of Kendall’s half-sister, Kim Kardashian. She has expressed her distaste for the reality television star in the past.

But does the “bad blood” extend to Kendall as well?

The first hint that Taylor had “diss-associated” herself from Kendall came when she shot her celebrity-packed video. It was a catalog of entertainment’s cool kids. More than 20 pals appeared in cameo roles.

Taylor pals Selena Gomez, Cara Delevingne, Zendaya, Hayley Williams, Lily Aldridge, Gigi Hadid, Jessica Alba and nearly a dozen others made an appearance (see list and photos)

Kendall reportedly was invited, she just “couldn’t do it because she had an out-of-town commitment on shoot day,” a source close to her claimed at the time.

If there was no bad blood, however, why was Swift conspicuously absent from Kendall’s party? She was clearly in LA with free time on her hands.

Swift, who wrapped the U.S. leg of her 1989 Tour in Tampa, Fla., over the weekend, was spotted at the Little Door restaurant on Monday night at the same time as Kendall’s party. Yet, she never dropped in to wish Kendall a happy birthday.

Taylor may have also bypassed the party because Justin Bieber was there. Swift has also dissed the Biebs in the past.

Other reports claim that Swift dropped Kendall because the budding model was spotted with One Direction singer Harry Styles, shortly after he broke up with Swift. That’s a BFF no-no.

Still other reports claim that Swift is being loyal to Gomez. In April a year ago, Gomez unfollowed Kendall and Kylie Jenner on her Instagram account after spending a weekend with them at the Coachella Music Festival.

Gomez, who was trying to sort out her life at the time, reportedly concluded the Jenners were “toxic.” Kendall’s friendship with Bieber has also been reported as a source of friction, according to lower-flying tabloids.

Whatever the reason, the latest episode is adding fuel to the fire that Swift is all out feuding with Kendall and the Kardashians.

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