How do you know it is a celebrity author book?

PW announced that Disney has signed Major League Baseball Hall of Famer Cal Ripken Jr.to write a baseball series.  

Ripken, bless him, may be the next Matt Christopher, Phil Bildner, Mike Lupica, authors who write (Christopher died in 1997) engrossing stories, using sports as a frame. 

I hope his series is a success.  Still, how do you know it is a celebrity author book?  

All together now, boys and girls, "when they use the word LESSONS in the publicity. "

Ripken says,

“Connor is a character that I was able to help develop with Kevin based on my experiences as a kid who struggled with his emotions. I hope that the kids reading it find it to be fun and take away a few lessons from it.”

The first book will be titled Hothead.