The lawsuit follows Lively's complaint about publicity tactics employed in the release of movie "It Ends With Us."

Explore the latest development in the Blake Lively and Justin Baldoni lawsuit, including Amber Heard's support and a shocking link to Johnny Depp.

Amber Heard says she has seen "first-hand" the online abuse and smear tactics that Blake Lively has endured in her ongoing feud with "It Ends With Us" co-star and director Justin Baldoni, who's accused of sexual harassment and other unwanted behavior on the film.