Copies of Jennette McCurdy's 'I'm Glad My Mom Died' Are Already Selling Out!

Jennette McCurdy has had a heck of a week!

The former Nickelodeon star has piqued interest with the many revelations from her newly-released memoir, "I'm Glad My Mom Died."

The now-30-year-old is now lifting the veil on her often-shocking upbringing as a child star, revealing the devastating state of her relationship with her late mother in the book. McCurdy's relationship with her mother, who passed away from breast cancer almost a decade ago, isn't the only area of her life that is off-limits.

The Blast has recently reported many of McCurdy's revelations about the struggles she endured behind the scenes of "iCarly," and its spin-off, "Sam & Cat."

During the promotional circuit for "I'm Glad My Mom Died," McCurdy has given insight into her relationship with her former co-stars, and the adults around her who oversaw her career.

McCurdy writes about her relationship with her "Sam & Cat" co-star who went on to become one of the most pop stars and popular culture figures in recent history.

She recalls stories illustrating a feeling that would go on to be all-too-frequent; she felt Ariana Grande had been given unfair advantages in her journey to superstardom, and that those same advantages and opportunities were being purposefully withheld from her.

According to one of our recent reports, in an exert from McCurdy's book which had been originally shared via The New York Times, McCurdy wrote, "What finally undid me was when Ariana came whistle-toning in with excitement because she had spent the previous evening playing charades at Tom Hanks' house."

The unfair advantages awarded to Grande did not stop there.

She also spoke about having to relinquish professional opportunities that weren't affiliated with Nickelodeon, whereas Grande could freely do so, and her character's absence on "Sam & Cat" was handled.

"I booked two features during 'iCarly' that I had to turn down because the 'iCarly' team wouldn't write me out of episodes to go shoot them," McCurdy writes.

She would also add, "Are. You. Kidding. Me, so I have to turn down movies while Ariana is whistle-toning at the Billboard Music Awards? F**k this."

McCurdy did not hold back on sharing her feelings toward Grande.

"I'm pissed about it. I'm pissed at her. Jealous of her. For a few reasons," McCurdy explains in her memoir, "So now, every time she misses work, it feels like a personal attack... From that moment on I didn't like her. I couldn't like her," she revealed.

McCurdy did have a supportive figure in her life.

She and "iCarly" co-star Miranda Cosgrove obviously found themselves spending time together while playing best friends on the show, and the duo formed a genuine friendship behind-the-scenes.

However, McCurdy's personal struggles did not find their way into their friendship, a fact Cosgrove has recently discussed publicly.

"When you're young, you're so in your own head. You can't imagine that people around you are having much harder struggles," the 29-year-old explained to the New York Times.

Cosgrove also added, "You don't expect things like that from the person in the room who is making everyone laugh." (via The Blast)

With so many intriguing stories within "I'm Glad My Mom Died," it makes sense the memoir would be flying off the shelves!

Released on August 9th, the book has already achieved a notable milestone; the hardcover edition has already sold out on Amazon! (via Rolling Stone)

McCurdy celebrated the release of her book on Twitter.

"what an amazing pub day," McCurdy tweeted, "couldn't sleep last night i was so excited and kept going going going all day. couldn't be happier. thank you all!"

Rolling Stone also reported the book was still available at other retailers, like Target. Those readers who live the Kindle life are in luck; Amazon still has copies of the ebook edition of the memoir available as of this writing!