Jennette McCurdy has opened up about feeling "jealous" and "p****d" at Ariana Grande in her new memoir, titled: I'm Glad My Mom Died.
The 30-year-old actress documented her early life and career, including unfortunate details regarding her mother, Debra McCurdy - who died of cancer in 2013 - in her new memoir released on August 9.
The former iCarly star spoke about her time on the popular Nickelodeon show and claimed that she had to turn down other work opportunities because she was filming for the show, however, Grande was allegedly allowed to skip filming the Sam and Cat show.
Per the Independent, she wrote: "The week where I was told Ariana would not be here at all, and that they would write around her absence this episode by having her character be locked in a box. Are you kidding me?"
"So I have to turn down movies while Ariana’s off whistle-toning at the Billboard Music Awards? F***. This," she added.
Grande and McCurdy became household names after playing supporting characters on Nickelodeon TV shows Victorious and iCarly.
In 2013, they became co-stars of a third show, Sam and Cat, with the spin-off show airing for one 35-episode season before being canceled in 2014.
McCurdy - who started her career at the age of eight - explained that the 'Thank U Next' singer was able to skip shooting to attend other events, which soon left her feeling envious and angry with Grande.
She recalled being told she was "a good sport" about the fact that Grande repeatedly missed filming for musical responsibilities.
"If I wasn’t such a good sport, to begin with, I wouldn’t be in this predicament in the first place. I wouldn’t be on this sh***y show saying these sh***y lines on this sh***y set with this sh***y hairstyle," she wrote.
"Maybe my life would be entirely different right now. I fantasize about it being different. But it’s not different. It’s this. This is what it is."
"Ariana misses work in pursuit of her music career while I act with a box. I’m p****d about it. And I’m p****d at her. Jealous of her," she added.
The actress further explained that she was also jealous of the '7 Rings' musician because she "had a much easier upbringing" compared to her.
As McCurdy's memoir reveals, she suffered alleged abuse at the hands of her "narcissistic" mother who she says pressured her into eating disorders and issued her to undergo breast and genital examinations until she was 16 years old.
She also wrote that her covetousness of Grande became more difficult to suppress as the singer was becoming more successful with her music career. The actress said it was hard not to compare her career trajectory to Grande's.
McCurdy wrote that the moment that "broke her" was after her former co-star arrived at work and said that she had spent the previous evening at Tom Hanks’s house playing charades.
"Popstar success I could handle, but hanging out with Sheriff Woody, with Forrest f***ing Gump? This has gone too far," she wrote.
"So now, every time she misses work, it feels like a personal attack. Every time something exciting happens to her, I feel like she robbed me of having that experience myself," she added.