Lauren Sánchez's new children's book is already a bestseller. But one particular Amazon review is getting noticed.

Zabel’s self-published book, “ Dharma Kitty Goes to Mars ” — which came out in March of last year and is sold, ironically, on Amazon — is a tale of a science student’s pet cat that falls asleep on a space shuttle and wakes up on a different planet.

A fitness instructor is suing Lauren Sánchez for theft of ideas, theft of intellectual property and intentionally inflicted emotional distress.