Rebel Wilson believes Adele “hates” her because of how people used to “confuse” them for one another in the past.

The 44-year-old “Pitch Perfect” actress made the claim in her upcoming memoir, “Rebel Rising,” according to an extract acquired by Us Weekly.

“Some actresses might be outraged if I named them plus-size in this book, so I have to be cautious about what I say. “This is why, I believe, Adele despises me,” she writes in the book, which will be released Tuesday.

Rebel Wilson revealed why she thinks Adele “hates” her.

The actress got candid in her new book, “Rebel Rising.”

“Some actresses would get offended if I called them plus-size,” she claimed in her book.

“There was a moment when she was bigger, and some people would confuse us for one another,” Wilson went on, noting that she was making an assumption about the “Easy On Me” songstress.

“To be fair I’ve never asked her,” she conceded.

The Australian actress also claimed she crossed paths with Adele at several events. However, when she attempted to approach her, the Grammy winner would allegedly “always quickly” turn away.

Wilson claimed that whenever she attempted to approach Adele, the Grammy winner would “always quickly” turn away.

“As if my fatness might rub off on her,” she added.

“As if my fatness might rub off on her if I were near her for more than thirty seconds,” she joked.

“She didn’t like being compared to ‘Fat Amy,’” Wilson further claimed, referring to her iconic character from the “Pitch Perfect” franchise.

We has reached out to reps for Adele for comment.

The “Pitch Perfect” star also wrote about Sacha Baron Cohen in the book.

She called the “Borat” actor a “massive a–hole.”

Wilson’s memoir has also been making headlines after she named Sacha Baron Cohen as a “massive a–hole” she was “scared” of while filming “The Brothers Grimsby.”

“It felt like every time I’d speak to SBC, he’d mention that he wanted me to go naked in a future scene,” Wilson claimed in an excerpt from the book, published by People. “I was like, ‘Ha, I don’t do nudity, Sacha.’”

The “Borat” actor, 52, then allegedly summoned her “to film an additional scene” for their 2016 action flick.

“Then he pulls his pants down,” she alleged. “SBC says very matter-of-factly: ‘Okay, now I want you to stick your finger up my ass.’ And I’m like, ‘What?? … No!!’”

Cohen called Wilson’s claims about his behavior on the set of their 2016 film “demonstrably false.”

The “Bridesmaids” actress claimed she “finally compromised” by slapping his backside and improvising “a few lines” so she could “get out of there.”

Cohen has since called Wilson’s claims “demonstrably false.” His rep told Page Six the allegations were “directly contradicted by extensive, detailed evidence, including contemporaneous documents, film footage and eyewitness accounts from those present before, during and after the production.”

The “Senior Year” star, however, has since doubled down on her allegations, writing on social media last week that she will not “be threatened.”