As of December, #BookTok has more than 42.2 million posts on TikTok. It has inspired readers to share how a book has impacted them, improved discovery, and contributed to the resurgence of physical bookstores. Morris said the community played a role in the success of authors such as Colleen Hoover, known for her hit book and movie It Ends With Us, and Taylor Jenkins Reid, whose novel The Seven Husbands of Evelyn Hugo is being adapted by Netflix. @kellyclarksonshow #booktok just gained a new member! @Kierra Lewis #fourthwing #kellyclarkson ♬…