Sydney Sweeney and Zendaya’s Tension Has ‘Cast a Shadow’ Over Promotion for Season 3 of ‘Euphoria’

TV temptress Sydney Sweeney’s supposed feud with Euphoria costar Zendaya recently went nuclear, Globe can reveal — and it’s worse than anyone could’ve imagined.

Sources say the fallout has been so epically bad that their hit HBO series was plunged into chaos mere weeks before season 3 debuted on Sunday, April 12.

“Sydney and Zendaya should be ashamed of themselves,” blasts a source, noting loyal fans waited more than four years for the latest batch of episodes. “The bad blood between the two of them totally cast a shadow over promotion of the show.”

Eyebrows were raised last month when the blond bombshell was seemingly excluded from a photo shoot featuring Euphoria’s leading ladies. A teaser video released by the network showed behind-the-scenes footage of Emmy winner Zendaya, 29, front and center as she posed with castmates Hunter Schafer, Alexa Demie and Maude Apatow.

Reports surfaced that Sweeney, 28, was simply filming scenes at the time the women were getting their pictures taken — which Globe’s insider says tracks.

“Zendaya and Syd were mostly sequestered from one another during the making of season 3,” adds the insider. “They had their own separate storylines that barely overlap.”

While the pair’s animosity has been blamed on opposing political views in the past, our source contends the Dune actress’ close relationship to series showrunner Sam Levinson is “a root problem” in her ongoing rift with the Housemaid headliner.

“She’s always enjoyed a kind of ‘teacher’s pet’ status on that show that has been difficult for Sydney to navigate,” says the insider. “It’s especially hard considering Sydney’s been asked to do much more extreme scenes on the series.”

Though Euphoria’s eight-episode third season is widely believed to be its last, sources say there’s no sign of the “bitter rivalry” ending.

“They are both going to be movie stars for years to come, and this fight could grind on for decades,” says the insider. “Nobody expects Zendaya and Sydney to shake hands and make up anytime soon.”