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

Jeff Bezos has left a glowing Amazon review for the children’s book, The Fly who Flew to Space, written by his fiancee, Lauren Sanchez. Published on September 10, the illustrated book follows a fly named Flynn who pursues her dream of becoming an astronaut and ends up travelling to space in a rocketship.

Lauren Sánchez, writer, journalist and romantic partner of Jeff Bezos, has found herself in hot water after her former yoga instructor, Alanna Zabel, filed a lawsuit against her for allegedly plagiarizing her children's book "Dharma Kitty Goes To Mars.