Jeff Bezos' fiancée, Lauren Sanchez, is being sued by her former yoga instructor over her new children's book, 'The Fly Who Flew to Space.'

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

Jeff Bezos’ fiancee, Lauren Sánchez, is being sued by her former yoga teacher over her new children’s book. Wellness guru Alanna Zabel alleges Sánchez’s “The Fly Who Flew To Space,” which was published in August, is a rip off of her children’s book “Dharma Kitty Goes To Mars,” according to a lawsuit obtained by TMZ.

Lauren Sanchez’s former yoga instructor, Alanna Zabel, has filed a lawsuit against the ex-entertainment journalist.

In the post, she also shared a photo of old school yearbook portraits and added in her caption, "Even one of my old teachers showed up and brought a yearbook. 😮”