The lawsuit alleges that "well into production, Lively had not even read the book" the movie is based on, by Colleen Hoover Justin Baldoni is alleging his It Ends with Us costar Blake Lively did not read Colleen Hoover's blockbuster book the movie is based on as he sues her and others for $400 million.

Justin Baldoni is accusing his It Ends With Us costar Blake Lively of not putting in the work when it came to starring in the book-to-movie adaptation. Baldoni, 40, and his production company Wayfarer Studios filed a $400 million lawsuit against Lively,

Everything Justin Baldoni has alleged against Blake Lively as the stars' feud plays out—including in a new federal lawsuit filed Thursday.