On Wednesday, Sept. 11, the former TV anchor turned author proudly posted a loving snap of Gonzalez, whom she shares with ex Tony Gonzalez, holding up her new children's book, The Fly Who Flew to Space.

In the pic, Gonzalez, 23, is seen going down an escalator, smizing as he proudly holds up the book.

"Look who bought a book!!!!!" Sánchez wrote over the photo.

On her Instagram feed, Sánchez, 54, shared a fun video of her, Gonzalez, and a couple of others excitedly headed towards a Barnes & Noble bookstore.

"I'm so excited, is this real?" the philanthropist said with a smile as she went up an escalator and hurriedly turned a corner. She reached the children's section, she gasped when she spotted her book and quickly pulled it off the shelf. She jumped up and down and squealed before jokingly putting it on the top shelf in front of another book.

The sweet video ended with Sánchez autographing a book.

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The Fly Who Flew to Space follows a fly named Flynn who isn't the best at school but is still curious about life. During one of her adventures, she accidentally gets trapped in the cockpit of a rocket that's going to space.

The venture proves to be more than Flynn could've ever hoped for, as she learns about space, Earth, and why it's important to protect it.

In August, Sánchez told PEOPLE how her own life experiences inspired the book.

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"I was flying with my kids and a fly somehow got into the cockpit of the plane. My kids were like, 'Oh no, this poor little fly is separated from his family!' And I was like, 'I don't know, she gets to see the world from a completely different perspective,' " Sánchez recalled.

"So that sparked this fun story in my mind, that even the smallest among us can experience incredible adventures," she added.