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Kelly Clarkson writing children's book about daughter, River Rose

The Grammy-winning singer and "American Idol" champ made the announcement on Twitter Tuesday.
/ Source: TODAY

Kelly Clarkson didn't have to look far to be inspired to write a children's book.

That's because the three-time Grammy Award winner and O.G. "American Idol" champ found plenty of literary fodder in hanging out with her own 19-month-old daughter, River Rose.

"I'm officially a children's book author!" the singer tweeted Tuesday, with the hashtag #NewProject. "River Rose and the Magical Lullaby comes out this October!"

In a 2-minute, 30-second promotional video embedded in that tweet, Clarkson explains that the idea for the book stemmed from the adventures she shared with her young muse on tour.

"We were going on trips to the U.K. and Asia and Australia — you know, just all these amazing places that she was too little to remember, basically," said Clarkson, who wrote and performed a lullaby to accompany the book. "So, I started writing down these little fun stories — of, like, when we went to Australia and she got to hang out with some kangaroos. I thought I'd just write little cute stories for her and put little pictures with it. And that was the initial idea. Those little stories ended up turning into a book for each place we kinda went."

According to publisher HarperCollins, Clarkson's story is illustrated by Laura Hughes and follows a fictional version of River Rose, who is "so excited to see the animals and ride the carousel that she can’t fall asleep —until a magical lullaby from her mom sends her off on an amazing adventure."

Clarkson also had fun with the last minute of her promotional video, joking in a behind-the-scenes segment that her daughter was "out of hand" and a "micro-manager" with "attitude" throughout the shoot. Moments later, the singer shouted "Get off me!" at some nearby balloons and contended, "I don't know where she gets it from."

In a series of clues shared on social media in the days leading up to her announcement, Clarkson hinted that her new project that involved "balloons, magic and a lullaby." And on Super Bowl Sunday, she joked that she couldn't afford to air one of those expensive TV ads for the big game, so she posted a dramatic video of River Rose on Instagram instead.

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"She's coming," teases superimposed text in that adorable video, for which River Rose is dressed in a robe in front of a makeup mirror. "The DIVA has arrived."

Clarkson and her husband, Brandon Blackstock, announced in October that they're also expecting a son. There's no word just yet on whether the boy will inspire books of his own.

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In the meantime, fans can pre-order Clarkson's book, which hits shelves Oct. 4.

Follow writer Chris Serico on Twitter.