FKA Twigs is reportedly threatened by long history of her rumored fiancé Robert Pattinson with his ex and "Twilight" co-star, Kristen Stewart.

According to Celebrity Dirty Laundry, the British singer is "insecure" about Kristen Stewart's relationship with Robert Pattinson as he fears that he could leave her anytime for the "Twilight" actress.

"It's no secret that Twigs despises Kristen Stewart, her fans, and the Twilight franchise in general," the article said. "Twigs is obviously insecure about her relationship with Robert Pattinson and his history with his Twilight co-star, Kristen Stewart seems to have moved on and could care less."

"But Twigs is constantly scared that Kristen Stewart will steal her spotlight, her fiancé Pattinson, or both."

Earlier this week, Kristen Stewart had a blast spending time with Kanye West during the Paris Fashion Week. But Alicia Cargile's rumored girlfriend also hung out with other celebrities such as Julianne Moore, Riley Keough, and model Lara Stone, said USA Today.

But it was Kristen Stewart's rendezvous with Kanye West that got Robert Pattinson's current flame, FKA Twigs, allegedly riled up.

"The British singer is determined to make a name for herself in the music world, and according to sources, she has always admired Kanye West," CDL said.

"So you can imagine her temper tantrum when photos hit the internet of Kanye West chilling with her nemesis Kristen Stewart. So much for a Kanye and Twigs collaboration ever happening!"

The source claimed that Robert Pattinson's girlfriend FKA Twigs believed that Kristen Stewart has been laughing with Kanye West behind her back.

"Twigs thinks that Kristen is trying to sabotage her career, by buddying up with Kanye West and bad-mouthing her to the rapper," the source added. "She thinks Kanye is a big deal, and it is killing her that he is friends with Kristen."

"Twigs is scared that Kristen is basically turning Kanye against her, and that could kill her career."